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HomeMy WebLinkAboutTIS 2022-11-21 Item 2A - Update - Neighborhood Traffic Calming Program ProjectCity of Tukwila Allan Ekberg, Mayor Public Works Department - Harr Ponnekanti, Director/City Engineer INFORMATIONAL MEMORANDUM TO: Transportation and Infrastructure Services Committee FROM: Hari Ponnekanti, Public Works Director BY: Joshua Hartley, Deputy Director of Public Works Cyndy Knighton, Senior Program Manager CC: Mayor Ekberg DATE: November 18, 2022 SUBJECT: Neighborhood Traffic Calming Program Project No. 80010301 Project Update ISSUE Provide a status update to Council for the Top 10 List in the Neighborhood Traffic Calming Program (NTCP), including the Allentown Neighborhood Transportation Study Update. BACKGROUND In 2021, the Council reinstated the full $400,000 budget for 2022 by using ARPA funding made available to the City from the Federal Government. Public Works presented a Staff Top 10 Recommended NTCP Projects List that would utilize this funding. As of October 2022, Public Works has encumbered roughly $374,000 on projects identified in the Top 10 List. The remaining balance ($26,000) will be spent on replenishing normal stock items used in traffic calming such as street signs, luminaires, speed feedback signs, speed cushions for future installation, etc. DISCUSSION This year, three NTCP projects have been completed, and three more are well underway. Project A — Allentown Neighborhood Speed and Safety Study, Project E — Tukwila Community Center Pedestrian Crossing Safety Improvements and Project J — S 144th Street/46th Avenue S ADA Ramps have all been completed. The Allentown Neighborhood Transportation Study was completed in October 2022. At the March 2022 and April 2022 Allentown Community meetings, the draft study was shared with residents and businesses, and feedback was collected to help determine traffic calming recommendations for the neighborhood. There are at least nine recommendations provided in the attached report. The recommendations include speed limit reductions on 115th, additional signage and pavement markings, installing rectangular rapid flashing beacons (RRFBs), additional crosswalks, intersection geometry improvements at S. 124th Street and 50th Place S., speed cushions, and other traffic calming measures. Public Works is reviewing the report now and developing potential scope of work for future projects. The City is actively searching and applying for grants to fund the recommendations identified in the Allentown Neighborhood Transportation Study. An application was submitted to the Washington State Department of Transportation's Pedestrian and Bicycle Improvements grant for a raised crosswalk, 1 Traffic Calming Program Info Memo Page 2 curb bulb outs, and an RRFB at the S 119th street bridge crossing on 42nd Ave S, which was a recommended improvement in the study. The City was recently notified by WSDOT that this project has been identified as a tier one funding priority. The City will be notified in early 2023 if the project is selected for funding. NTCP projects that are still underway include: Project B — Tukwila Elementary School Safety Improvements, Project C — Impact Charter School Safety Improvements and Project D — Cascade View Elementary School Safety Improvements. Each of these projects have completed preliminary planning studies and are awaiting coordination with the individual schools before moving to final design of the recommended improvements. Each site has specific challenges and operations that need to be discussed to ensure appropriate design elements are considered and that specific needs are met. FINANCIAL IMPACT Projects on the Staff Top 10 List, including the recommendations made in the attached study, are now anticipated to cost at least $1.2 million, potentially higher, based on the recommendations from projects such as Macadam Road and S. Ryan Way. Some of these costs can be borne by the existing $400,000 annual budget, and Public Works staff are actively applying for grants where possible to provide additional funding for future projects in the Top 10 List. RECOMMENDATION For Discussion Only. ATTACHMENTS: Top 10 Recommended NTCP Projects List Updated 11-04-22 Top 10 Recommended NTCP Projects Map Final Allentown Transportation Analysis 2 Staff Top -10 Recommended NTCP Projects Modified 11/2/2022 Project Details Potential Treatment Options Status Complete? Original Cost Range Estimate Updated Cost Estimate A Allentown Neighborhood Speed and Safety Study Since 2018, five individual requests for traffic calming have been recorded in the NTCP list of requests; however, traffic complaints have been made to the City over prior years. Addressing traffic safety concerns in Allentown is a top priority for the City. PW Staff reviewing recommendations and developing scope of work for future projects. Yes $50,000-80,000 $20k for study $640k for CN of study recommendations Study neighborhood -wide volume, speed, classification and safety issues. Design plan for Level 1 and Level 2 treatments throughout Allentown. Level 1: Improved signage; radar feedback signs; pavement marking modifications Level 2: Curb extensions B Tukwila Elementary School Safety Improvements Since 2018, 12 traffic calming requests have been made in the Cascade View neighborhood, with a significant number of them near Tukwila Elementary School. Common complaints have been over speeding and crosswalk or pedestrian safety. Additionally, the Council has asked for proactively addressing or anticipating concerns, specifically around school zones. Some improvements have been made around Tukwila Elementary School already but more improvements are needed. Have reached out to Tukwila School District/Tukwila Elementary School staff to gain understanding of operations and challenges. Improvements will be made in 2023. Underway $30,000-80,000 TBD Address speeding and crosswalk safety concerns. Level 1: Improved signage; radar feedback signs; pavement marking modifications Level 2: Curb extensions; RRFB installation; ADA ramp upgrades; improved illumination C Impact Charter School Safety Improvements A request specific to the newly opened Impact Charter School was received in 2019. The request was to provide a signed school zone, which Tukwila has provided along with signs marking school crossings on S 148th Street. ADA -compliant ramps have not been installed at the marked school crossings. The charter school has expanded their site to the north with a need for consideration of a school zone on 5 146th Street and other potential improvements for children's safety. Additionally, the Council has asked for proactively addressing or anticipating concerns, specifically around school zones. Awaiting a proposed private development for possible ADA ramp improvement. Underway $8,000-15,000 TBD Provide school crossing improvements, establish school zone on S 146th Street, if needed. Provide school crossing improvements, observe operating speeds, if necessary establish speed zone. Level 1: Improved signage for school zones on S 148th Street and S 146th Street; crosswalk installation Level 2: ADA ramp improvements; curb extensions D Cascade View Elementary School Safety Improvements Since 2018, the Tukwila Hill neighborhood has seen 9 requests for traffic calming. Four of the locations are around the speeding, school crossing and pedestrian safety around the Cascade View Elementary School. 85th Percentile speeds of —30MPH in the 25MPH zones have been recorded, but analysis to separate whether the speeding is even more than the posted school zone has not been done. Additionally, the Council has asked for proactively addressing or anticipating concerns, Study for improved signage and crosswalk underway Design for ADA improvements later in year with construction likely in 2023 Underway $8,000-15,000 TBD Upgrade School Zone signing, design and install pedestrian crossing improvements. Level 1: Improved signage for school zones on S 148th Street and S 146th Street; crosswalk installation Level 2: ADA ramp improvements; curb extensions E Tukwila Community Center Pedestrian Crossing Safety Improvements The City Council has expressed desire for the NTCP to have a proactive element in addressing traffic calming and safety needs throughout the City. The TCC is a well -utilized facility by the Allentown neighborhood as well as the entire City and surrounding area. Concerns over the pedestrian crossings on 5 124th Street have been raised by staff and residents in the past, along with the larger complaints of speeding in Allentown. Increasing pedestrian visibility to improve safety in this high -use area is a recommended top priority for the NTCP. Complete Yes $80,000-100,000 $15k PE $47k RRFB units $78k RRFB Installation Design and install mid -block pedestrian safety improvements on S 124th Street. Level 1: Improve pedestrian crossing signage Level 2: RRFB installations; upgrade ADA ramps; curb extensions; improved illumination F Macadam Road Speed and Safety Improvements At least five requests for traffic calming, specific to speeding (and some secondary reasons) have been made since 2018. A radar feedback sign was placed near the 13700 block in 2019 but requests have continued to be made. Additional analysis is warranted to determine what other improvements could be used to address the speeding, especially where Macadam has extremely limited sight distance due to the curvy nature of the roadway. Individual Project to begin design 10 2023. $10,000 - 30,000 TBD Design and install treatments addressing speeding and curve safety north of S 144th Street. Level 1: Improved signage; LED chevron signs; channelization modifications Level 2: 3 Staff Top -10 Recommended NTCP Projects Modified 11/2/2022 r._�_:E. Original Cost Range Updated Cost G Southcenter Boulevard/65th Avenue S Pedestrian Safety Improvements Staff identified the need for improvement pedestrian safety at this location several years ago. Southcenter Boulevard is a 5 -lane roadway with known speeding issues along with curves that restrict sight distance. A high pedestrian usage at this intersection accessing the King County Metro bus stop that services both the Rapid Ride F -Line and Route 150, both workhorses of the south County transit network, justifies improving pedestrian crossing safety. This intersection is slated for full signalization in the future, but interim pedestrian safety improvements should be considered sooner. Funding available for design of full signal in 2022 CIP. Design to begin in 2022. Recommended improvements will be incorporated into signal project in the CIP. $50,000-$90,000 TBD Design and install pedestrian safety improvements Level 1: Improved signage for pedestrian crossing Level 2: RRFB installation; ADA ramp upgrades; improved illumination H City-wide Residential Speed Limit Review As part of the City Council's expressed desire to proactively look at traffic calming needs, a full review of the residential street posted speed limits is recommended by staff. State law establishes city speed limits at 25MPH unless an engineering study is completed to justify higher speed limits. Most residential streets are posted at 25MPH today, but there are many that are posted at 30MPH or 35MPH. Likely, those speed limits are legacies of past annexation areas, where a speed study was completed by King County. The general impression Staff has is that most residents and elected officials would be happier with lower speed limits. City of Seattle has also recently lowered all speed limits nearly city-wide to be 25MPH. Reviews to begin in early 2023. $5,000-8,000 TBD Identify residential streets with speed limits currently above 25MPH. Conduct volume, speed and safety review. Recommend changes to speed limits, as necessary. Level 1: Modify speed limit ordinance; as needed; install new signs; as needed. Level 2: S Ryan Way Pedestrian Safety Improvements Two requests for traffic calming to address speeding and pedestrian crossing safety in the Ryan Hill area have been made in 2021. New developments are coming forward that will increase the residential population of this part of the City with multi family developments. The speed concerns, especially along S Ryan Way, coupled with the new housing developments increasing the likelihood of increased pedestrian activity, warrants this analysis be recommended as a top priority. planning and Design to begin in early 2023. Will be stand alone project based on recommendations provided by the designer. $10,000-100,000 TBD Safety study on S Ryan Way from MLK Jr. Way to east city limits, focusing on speeding and pedestrian safety. Recommend Level 1 and Level 2 improvements. Design and construct improvements. Level 1: Improved signage Level 2: Curb extension, improved illumination J S 144th Street/46th Avenue S ADA Ramps The Tukwila School District requested school crossing safety improvements at this intersection in 2017. A new Rectangular Rapid Flashing Beacon was installed in early 2019. At the time the RRFB was installed, the City was also submitting a grant application for the 46th Avenue S Safe Routes to School project, which would improve pedestrian safety between this intersection south to S 150th Street, and would include either a raised pedestrian crosswalk at the RRFB or install ADA - compliant curb ramps. The grant was not awarded. State law requires ADA ramps be brought up to current standards anytime a new signal, including the RRFB, is installed. Since grant monies for the larger improvement are not expected in the short term, staff recommends this as a priority to comply with all state and federal laws regarding Americans with Disabilities Act Complete Yes $15,000-20,000 $15k PE $90k Construction Design and install ADA -compliant ramps at the intersection. Level 1: Level 2: ADA upgrades to ramps at RRFB (not done at time of RRFB installation due to budget constraints) 4 • i Lake Washington .4k\,„1, i S 200th St Lfes• 5204th St__====�._y• City of Tukwila S Not to Scale 8 Vicinity Map King County U:\PW Eng\GIS General Maps \Streets_11 x17_Sept2018.mxd Date: 09/09/18 By: R. Linsao Disclaimer: The location of features and boundaries are approximate and are intended for reference only. Data is based on best information available. P PSOMAS Memorandum To: Public Works Department, City of Tukwila From: KPG Psomas Date: October 10, 2022 Re: Allentown Neighborhood Transportation Study The City has received several requests for traffic calming from citizens in the Allentown Neighborhood. As part of the Neighborhood Traffic Calming Program, the City hired KPG Psomas to evaluate existing roadway and non -motorized facilities, adjacent land uses, vehicle speeds, vehicle volumes, signage, and five years of historical crash data. KPG Psomas and City staff met with the Neighborhood several times to understand their issues and concerns, hear feedback on potential improvements, and share recommended improvements. Based on this analysis and community input, KPG Psomas and the City developed a set of recommended improvements to calm traffic, improve safety, and enhance pedestrian mobility. The approximate boundaries of the Allentown Neighborhood are the Duwamish River to the south and west, S 115th Street to the north, and 1-5 to the east. The primary land uses in the Neighborhood are residential, Tukwila Community Center, and BNSF Railway Intermodal facility. Figure 1 shows a map of the Allentown Neighborhood study area. Street Network Due to the Duwamish River, BNSF Railroad tracks, and 1-5 being located around the perimeter of the Allentown Neighborhood, there are only three vehicle access points to the Neighborhood at S 115th Street, 42nd Avenue S bridge over the Duwamish River, and 50th Place S that connects to S 129th Street. S 129th Street provides one of the few crossings of the BNSF Railroad tracks and I-5 in the area. There are two street classification types in the Allentown Neighborhood: Collector Arterials and Local Streets. The Collector Arterials are S 115th Street, 42nd Avenue S, S 124th Street, and 50th Place S. The Collector Arterials are intended to carry the majority of the traffic through the Neighborhood. Local Streets are intended to provide circulation and access to adjacent properties. Except for local access, trucks are restricted on S 115th Street and the segment of 42nd Avenue S, north of S 124th Street. Truck Traffic The BNSF Railway Intermodal facility is located along the eastern boundary of the Neighborhood with its primary access on S 124th Street at 51st Place S. This facility generates a high volume of truck traffic as containers are transferred between trains and trucks. Baker Commodities, a 3131 Elliott Avenue, Suite 400, Seattle, WA 98121 206.286.1640 www.kpg.com 6 rendering plant, also generates truck trips along S 124th Street and 50th Place S as the only access to the plant is from Railroad Avenue S which intersects 50th Place S at the southeast corner of the Neighborhood. There are other manufacturing and industrial businesses in the Neighborhood along 44th Place S and 51st Place S that generate truck traffic and trucks must use Local Streets to access these businesses. Figure 1. Allentown Neighborhood Study Area PEDESTRIAN BRIDGE TRAFFIC DATA COLLECTION LOCATION N H COLLECTOR ARTERIALS A 2 of 8 7 Related Projects in Allentown Allentown Truck Reroute Project This project is evaluating potential alternative routes to access the BNSF Railway Intermodal facility. Alternatives include maintaining the existing access at S 124th Street or relocating the access to the north or south. An Environmental Impact Statement (EIS) is currently being prepared to assess the impacts of each alternative, and recommend a preferred access location. Replacement of 42nd Avenue S bridge over Duwamish River The 42nd Avenue S bridge over the Duwamish River connects the Allentown Neighborhood with Interurban Avenue S. In December 2021, the bridge was damaged by an over -height truck load and was closed to all modes of travel pending repairs. The existing bridge is considered structurally deficient and the bridge is currently only open in the southbound direction. The City is designing a new bridge that will be constructed at the same location. Traffic Calming Traffic calming uses information, educational, and physical improvements and other strategies to slow vehicle speeds and improve safety through neighborhood areas. Traffic calming treatments include signs, striping and pavement markings (paint), on -street parking, narrowing the roadway, raised curb, curb bulbs, chicanes, roundabouts, center medians, speed cushions, raised crosswalks, and other treatments. The decision on whether to install traffic calming should consider the potential for diverting traffic to parallel routes, emergency vehicle response times, type of vehicles using the roadway, travel delay, and neighborhood support. For collector arterial streets such as S 115th Street, 42nd Avenue S, S 124th Street, and 50th Place S, KPG Psomas does not recommend the installation of speed humps or cushions for the following reasons: • Inappropriate for collector arterials which are intended to carry the majority of traffic. • Potential for vehicles to shift from arterials to parallel local streets. • Negative impacts to emergency vehicle response times (including Tukwila Fire Station 53). • Noise impacts to homes due to vehicles crossing cushions, braking and accelerating. • Not compatible with truck operations that access existing businesses in the Neighborhood. Analysis Findings and Recommended Improvements Transportation volume and speed data were collected from 2020 to 2022 during the COVID-19 pandemic when traffic volumes were potentially lower due to more people working from home and fewer people traveling for social and recreational activities. The 42nd Avenue S bridge over the Duwamish River was closed for repairs when the 2022 traffic data was collected on 42nd Avenue S, north of S 124th Street. As part of the analysis, KPG Psomas also evaluated five years of historical crash data. A summary of the crash data is provided in Appendix A. The following sections describe the characteristics of individual streets in the Neighborhood and the recommended improvements to calm traffic, improve safety, and enhance pedestrian mobility. Figure 2 shows the recommended improvements. The implementation of these improvements will depend on available funding for design and construction. Cost estimates for the recommended improvements are included in Appendix B. 3 of 8 8 Figure 2. Allentown Neighborhood Recommended Improvements S 115th Street RECOMMENDED N IMPROVEMENTS A COLLECTOR ARTERIALS Street Classification Collector Arterial Speed Limit 30 mph Eastbound Average Vehicle Speed 21 mph Eastbound 85th Percentile Vehicle Speed 36 mph Westbound Average Vehicle Speed 21 mph Westbound 85th Percentile Vehicle Speed 36 mph Note: Data collected July 2020. 4 of 8 9 S 115th Street runs east -west between East Marginal Way S and 42nd Avenue S. The street provides access to the Duwamish Hill Preserve and the Allentown Neighborhood. There is a sidewalk on the north side of the street. Recommended Improvements A. Speed limit reductions — lower the speed limit on S 115th Street from 30 mph to 25 mph to lower speed entering the Allentown Neighborhood and to be consistent with the speed limit on 42nd Avenue S. On East Marginal Way approaching the 115th Street intersection, install 25 mph advisory speed limit signs to warn drivers of turning vehicles. 42nd Avenue S East Marginal intersection Way and S 115th Street Notes: 'Data collected 1/13/2022-1/22/2022 when 42nd Avenue S bridge over Duwamish River was closed. 2 Data collected August 2021. 42nd Avenue S runs along the Duwamish River with residential homes along the east side of the street. There is a pedestrian bridge crossing of the river at S 119th Street and the Duwamish Park is located at approximately S 117th Street. A continuous sidewalk runs along the east side of the street between S 115th Street and Interurban Avenue S, except for a missing segment at the S 124th Street/42nd Avenue S intersection. The 42nd Avenue S corridor experienced 10 crashes during the five-year study period. Recommended Improvements 42nd Avenue S at S 119th Street (looking north) B. 25 mph pavement markings — paint 25 mph markings on southbound 42nd Avenue S, south of S 115th Street and on northbound 42nd Avenue S, north of S 124th Street. C. Improved pedestrian crossing and traffic calming — construct a Rectangular Rapid Flashing Beacon (RRFB) system, raised crosswalk, curb bulbs, and ADA sidewalk improvements at the S 119th Street pedestrian bridge crosswalk to shorten the pedestrian crossing distance, narrow travel lanes, and calm traffic. 5 of 8 10 Segment north of S 124th Street1 Segment south of S 124th Street' Street Classification Collector Arterial Collector Arterial Speed Limit 25 mph 25 mph Northbound Average Vehicle Speed 31 mph 25 mph Northbound 85th Percentile Vehicle Speed 36 mph 30 mph Southbound Average Vehicle Speed 31 mph 23 mph Southbound 85th Percentile Vehicle Speed 36 mph 29 mph Average Weekday Traffic Volume 3,900 9,300 Notes: 'Data collected 1/13/2022-1/22/2022 when 42nd Avenue S bridge over Duwamish River was closed. 2 Data collected August 2021. 42nd Avenue S runs along the Duwamish River with residential homes along the east side of the street. There is a pedestrian bridge crossing of the river at S 119th Street and the Duwamish Park is located at approximately S 117th Street. A continuous sidewalk runs along the east side of the street between S 115th Street and Interurban Avenue S, except for a missing segment at the S 124th Street/42nd Avenue S intersection. The 42nd Avenue S corridor experienced 10 crashes during the five-year study period. Recommended Improvements 42nd Avenue S at S 119th Street (looking north) B. 25 mph pavement markings — paint 25 mph markings on southbound 42nd Avenue S, south of S 115th Street and on northbound 42nd Avenue S, north of S 124th Street. C. Improved pedestrian crossing and traffic calming — construct a Rectangular Rapid Flashing Beacon (RRFB) system, raised crosswalk, curb bulbs, and ADA sidewalk improvements at the S 119th Street pedestrian bridge crosswalk to shorten the pedestrian crossing distance, narrow travel lanes, and calm traffic. 5 of 8 10 S 124th Street Street Classification Collector Arterial Speed Limit 25 mph Eastbound Average Vehicle Speed 27 mph Eastbound 85th Percentile Vehicle Speed 33 mph Westbound Average Vehicle Speed 27 mph Westbound 85th Percentile Vehicle Speed 33 mph Average Weekday Traffic Volume 8,100 Note: Data collected July and August 2021. S 124th Street provides access to single family homes, Tukwila Community Center, and BNSF's Intermodal facility at the east end of the street. There is curb and sidewalk along the frontage of the Community Center and the north side of the street has a pedestrian walkway with segments of extruded curb that provide a buffer from the roadway between 42nd Avenue S and 49th Avenue S. An eastbound vehicle speed radar feedback sign is located at 45th Avenue S. S 124th Street experienced 8 crashes during the five-year study period. In 2019, there was a fatal vehicle -pedestrian crash at the S 124th Street/46th Avenue S intersection. Recommended Improvements: S 124th Street at 46th Avenue S (looking west) D. Improved pedestrian crossings — install Rectangular Rapid Flashing Beacon (RRFB) systems at 44th Avenue S (Community Center driveway) and 46th Avenue S. Construct raised curbs and sidewalks to separate pedestrians and vehicles, narrow the pedestrian crossing distance, and provide traffic calming. E. North side pedestrian walkway between 49th Avenue S and 51st Place S — construct a continuous pedestrian walkway along north side of S 124th Street. F. Reconfigure S 124th Street/50th Place S intersection - remove eastbound right turn slip lane to calm traffic and improve safety. Currently eastbound right turning vehicles are not required to stop. Reconfigure the intersection with single -lane approaches and require all vehicles to stop. 6 of 8 S 124th Street/50th Place S intersection 11 S 125th Street S 125th Street is a local street along the Duwamish River that connects between 46th Avenue S and 50th Place S. Residents along the street have expressed concerns regarding speeding and cut - through traffic. There have been 3 crashes at the S 125th Street/50th Place S intersection over the last 5 years. This intersection is just south of the S 124th Street/50th Place S intersection, which has an eastbound right turn slip lane that does not require vehicles to stop. Recommended Improvements G. Speed cushions — continue to monitor vehicle speeds and volumes in order to evaluate potentially installing speed cushions. Coordinate with residents along S 125th Street to determine if they support speed cushions. Speed cushions could be an appropriate treatment along this street because there is not a parallel local street that could be impacted by diverting traffic. 50th Place S Street Classification Collector Arterial Speed Limit 25 mph Northbound Average Vehicle Speed 32 mph Northbound 85th Percentile Vehicle Speed 36 mph Southbound Average Vehicle Speed 33 mph Southbound 85th Percentile Vehicle Speed 39 mph Average Weekday Traffic Volume 7,300 Note: Data collected July and August 2021. 50th Place S connects between S 124th Street and S 129th Street. S 129th Street crosses the BNSF tracks and 1-5, and is the southeast entrance to the Allentown Neighborhood. 50th Place S serves residential properties and Codiga Park along the Duwamish River. There is a segment of sidewalk on the west side of the street along the Park's frontage. The eastside of the street has a striped paved shoulder that has a few segments of extruded curb that provide separation from vehicles. Recommended Improvements 50th Place S, looking south H. Pedestrian walkway — construct a continuous pedestrian facility on either the west or east side of the street. I. Northbound vehicle radar feedback sign — add a feedback sign at Railroad Avenue, where 50th Place S enters the Allentown Neighborhood. 7 of 8 12 Local Streets Within the Allentown Neighborhood, the local streets are low-volume streets that provide access to homes and businesses. These local streets typically do not include formal pedestrian facilities and on -street parking is typically allowed. Recommended Improvements J. Reduce default speed limit from 25 mph to 20 mph for local streets — this could be part of a citywide speed limit reduction effort. 8of8 13 Appendix A. Allentown Neighborhood Crash Data by Corridor — 5 Year Period Corridors Rear end Sideswipe Head On Left Turn CU a Fixed Object Exits Roadway Pedestrian Pedal -cyclist Other TOt 1- 42nd Ave S 3 1 4 (1) 1 (1) 1 10 (2) S 124th St 1 1 1 2 2 1 (1) 1 8 (1) 50thPIS2 1 1 2 4 46th Ave S 1 2 3 S122ndSt 1 1 2 S 125th St 1 1 2 S 115th St 1 1 S 116th St 1 1 45th Ave S 1 1 Total 2 1 1 6 5 11 (1) 1 (1) 1 (1) 0 4 32 (3) Source: WSDOT crash data from (9/10/2016 - 9/9/2021). Notes: (#) indicates severe (fatality or serious injury) crashes. 1 Crashes at the 42nd Avenue S/S 124th Street intersection are included with the 42nd Avenue S corridor. 2 Crashes at the S 124th Street/50th Place S intersection are included with S 124th Street corridor. 14 Appendix B. Cost Estimates Summary ID Project Cost Estimate A S 115th Street - Speed limit reduction from 30 mph to 25 mph $2,000 B 42nd Avenue S — Two 25 mph pavement markings $5,500 C 42nd Avenue S — RRFB system with raised crosswalk and curb bulbs at S 119th Street $245,000 D S 124th Street — Improved crosswalks with RRFBs and curb bulbs at 44th Avenue S and 46th Avenue S [COMPLETE 2022] $70,000 E S 124th Street — North side pedestrian walkway between 49th Avenue S and 51st Place S $624,000 F S 124th Street — Reconfigure S 124th Street/50th Place S intersection to single -lane approaches and all -way stop control $750,000 G S 125th Street — Speed cushions ($5,000 each) $10,000 H 50th Place S — Continuous pedestrian facility $185,000 I 50th Place S — Northbound vehicle radar feedback sign $10,000 15