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Home My WebLink AboutTIS 2022-03-21 Item 2D - Report - 42nd Avenue South Bridge Replacement: Type, Size and LocationCity of Tukwila Allan Ekberg, Mayor Pit be Works Deportment - Barr Ponnekanti, Director/City Engineer INFORMATIONAL MEMORANDUM TO: Transportation & Infrastructure Services Committee FROM: Hari Ponnekanti, P.E., Public Works Director/ City Engineer BY: Adam Cox, P.E., Transportation Project Manager DATE: March 18, 2022 SUBJECT: 42nd Ave S Bridge Replacement Project -Type, Size, and Location Report ISSUE Update the Council and answer questions asked at the February 14, 2022 Committee of the Whole meeting regarding the Type, Size, and Location (TS&L) report for the 42nd Ave S Bridge Replacement project and seek Council direction. Staff recommends the 42nd Ave S steel girder alternative due to community feedback. BACKGROUND At the October 26, 2020 Committee of the Whole meeting, Council members were presented with the option to move the 42nd Ave S Bridge Replacement project forward with the selection of 30% Plans and Estimate (P&E) or the 100% ad -ready Plans, Specifications, and Estimate (PS&E). Included in the 30% P&E was a description of the TS&L report and the two conceptual alternatives for the replacement of the 42nd Ave S Bridge: 1. Replace the bridge in its current location; or 2. Replace the structure at S 124th St. Both alternatives are eligible for funding as the new structure will remain in the same corridor. On November 02, 2020, Council directed staff to move forward with the 30% P&E as part of TranTech's original contract and re-examine alternatives for 100% PS&E once additional funding was secured. The intent of starting the 30% P&E was to make the replacement project more competitive for the federally funded Local Bridge Program's (formerly known as BRAC) call for projects that was announced in late 2020, with the due date for the application in February 2021. The City Council adopted funding for the 42nd Ave S Bridge as its top state and federal legislative priority. In June 2021, the City was awarded $1.5M in federal contingency funding from the Puget Sound Regional Council (PSRC) to be applied toward the design phase, and in July 2021, the Local Bridge Program awarded $12M for the design and construction phases of the 42nd Ave S Bridge Replacement Project. These funds will cover all design expenses and move the project well into construction. Staff conducted the initial consultant selection process for the project in accordance with the Washington State Department of Transportation (WSDOT) Local Agency Guideline (LAG) manual to ensure the selected consultant would be approved by WSDOT and expenses would be eligible for federal grant reimbursement throughout the project. Given that federal protocol was adhered to during the selection process, WSDOT Local Programs Department determined that TranTech is an approved consultant to perform the design work without the need to readvertise or reinterview design consultants, a process that would take a minimum of three months. The ability to move forward with 100% design through the existing contract with TranTech provided the City with costs savings and prevented project delays. The supplemental agreement was issued to TranTech in October 2021 to reach 100% ad ready PS&E enabling future construction bidding. The bid ready PS&E is still on schedule to be completed by the third quarter of 2023. HISTORICAL TIMELINE 2017 City applied for and did not receive state funding for local bridge replacement 2019 City applied for and did not receive state funding for local bridge replacement 2020 City adopts 42nd St. Bridge Replacement as top state and federal legislative priority February 2020 Council approves $1 M for 30% design May 2020 Advertisement for design is published 47 August 2020 TranTech Engineering, LLC selected November 2020 Council Awarded 30% Design (Type, Size, Location) to TranTech June 2021 PSRC Funds Awarded June 2021 Local Bridge Program Funds Awarded October 2021 Council Awarded 100% Design to TranTech December 2021 Draft TS&L submitted for Public Works Engineers for Review December 15, 2021 Bridge Strike February 2022 Project included in the State Transportation Package for $17M in funding and is currently being considered by the legislature February 14, 2022 Committee of the Whole Discussion on TS&L report March 21, 2022 TISC Discussion on TS&L report As part of the 30% P&E, TranTech was tasked with creating a TS&L report to give the City alternatives for replacement of the 42nd Ave S Bridge. The TS&L report is an industry design standard that allows the agency to receive multiple alternatives and weighs all outcomes when a selecting a structure for replacement. During the TS&L process, TranTech and its subcontractors have used their best engineering judgement to create an accurate report that lines up with the City's best interests when replacing the structure. All four alternatives presented are using the same cross section configuration with 12 ft wide travel lanes, a concrete pedestrian barrier, and a 10 ft wide ADA -approved pedestrian walkway. The differences between the structures are: 1) the structure location; and 2) material used for girders. All four alternatives are eligible for federal funding and grants as they are in the same corridor as the current structure. All alternatives provided below have inherent pros and cons and the comparison matrix found in the draft TS&L report illustrates all the weighted variables and provides a professional rating of each element. Due to the complexity of each replacement option and the limited scope of work in preparation of the TS&L, each option has had a construability review at a cursory level. This allows the design team to explore multiple avenues without wasting time focusing on one option that would not be the preferred structure for this project. There are still multiple unknowns that will be investigated during the design process. Once a replacement is selected, TranTech can then focus their efforts to creating a safe, dependable structure that has a design life of 100+ years. The following alternatives to be considered for the 42nd Ave S Bridge replacement are: • Alternative 1: New 42nd Ave S Bridge with Steel Girders Replace the structure in its current location with the main span consisting of steel girders. • Alternative 2: New 42nd Ave S Bridge with Concrete Girders Replace the structure in its current location with the main span consisting of concrete girders. • Alternative 3: New S 124th Street Bridge with Steel Girders New structure at S 124th St with the main span consisting of steel girders. • Alternative 4: New S 124th StreetBridge with Concrete Girders New structure at S 124th St with the main span consisting of concrete girders. ANALYSIS Council was presented the four alternatives for the 42nd Ave S Bridge replacement at the February 14, 2022 Committee of the Whole meeting. At that meeting, Council had the opportunity to ask City staff and TranTech Engineering staff technical questions about the proposed locations of the 42nd Ave S and S 124th St replacement locations. City staff also presented the same presentation at the February 22, 2022 Allentown meeting and gave the opportunity to have community members ask questions regarding the bridge locations. Also at the Allentown meeting, a 3D model was present to allow attendees to observe the 42nd Ave S and S 124th St alignments from multiple firsthand angles. Many comments and questions were Phone; 2406-433-1800 Email.: Maytr TukwilaWA.gcv • Website: TukwiIMMA.gov 48 expressed during the Allentown meeting. The attached table has multiple questions asked by council and community. Please see photographs with the questions/comments written down and posted onto the available boards at the community meeting. PROPOSED NEXT STEPS Public Works staff will continue to share and answer comments/questions regarding the 42nd Ave S Replacement and gather additional feedback at the monthly Allentown Community Meeting on March 22, 2022 and other community outreach meetings. City staff currently has a video and survey available on the City's website for Tukwila residents, businesses, and daily users to give their feedback on the bridge location selection. City staff will return to Council at the March 28, 2022 Committee of the Whole with the results of the City wide survey and comments from the Allentown meeting to seek Council's direction regarding the selection of the replacement option. Ad ready 100% plans, specifications, and estimate (PS&E) is still on schedule to be completed in the 3rd quarter of 2023 with obligation of construction funds in 2024. City staff will update to the Council after the construction bid results are obtained. Project completion is still estimated in late 2025. FINANCIAL IMPACT Based on location preference, the final construction costs will vary. The difference between the 42nd Ave S steel girder alternative and the 124th S St steel girder alternative is approximately $2,868,537 (approximately 12%). The Washington State Legislature passed the $17 billion Move Ahead WA transportation package, which included $17 million for the replacement of the 42nd Avenue Bridge. The City of Tukwila has also received funding from PSRC and the State Local Bridge program, totaling an additional $13.5million. According to current engineering estimates, the City now has enough funds to complete the 42nd Avenue Bridge replacement. RECOMMENDATION The attached TS&L triple bottom line matrix recommends the steel girder S 124th St as the preferred option. However, staff recommends 42nd Ave S steel girder alternative due to community feedback. Staff seeks Council direction on the preferred location of the 42nd Ave S/ 124th Street bridge replacement at the March 28, 2022 Committee of the Whole meeting. ATTACHMENTS: 2021 CIP, Pg 9 Revised Council Questions and Answer Presentation Draft Type, Size, and Location Report 42nd Ave S and S 124th St Bridge Renderings Phone; 206-433-18MO • Email: Mayor@TtikwillaWA.gov + Website: TukwilaWA.gov 49 CITY OF TUKWILA CAPITAL PROJECT SUMMARY 2021 to 2026 PROJECT: 42nd Ave S Bridge Replacement Project No. 91810404 DESCRIPTION: Design and construct a replacement structure for the existing 42nd Ave S Bridge near the Tukwila Community Center. Council approved 30% design with City funding of $1 M in 2020, remaining scheduled in 2022. JUSTIFICATION: The current bridge has a sufficiency rating of 7.6 (out of 100), is load restricted for AASHTO Type 3 trucks and is structurally deficient. Truck speed was reduced to 15 mph in 2018. In 2017 and 2019, Bridge Replacement Advisory Committee (BRAC) funding was submitted, but not awarded. STATUS: Staff will apply for future BRAC funding during the next call. Applying for STP funding in 2020 for $1.5m for design. MAINT. IMPACT: New bridge. STP funding has 13.5% match requirement. BRAC funding would be at 80% match for up to $12 million. Project COMMENT: partners may include FMSIB & BNSF Railroad as they have over 1,800 trips a day on the 42nd Ave S Bridge and it is the only ingress/egress available for their intermodal yard. Also State TIB for $3M. FINANCIAL Through Estimated (in $000's) 2019 2020 2021 2022 2023 2024 2025 2026 BEYOND TOTAL EXPENSES Project Location 't,.... . ` N \ i �� \\`�`- ,�®� . 1e a y`\ . r `T/i �r ��' --'V bT Design 19 200 878 248 2,355 3,700 Land (R/W) Ld '401 IL I 200 \\\ .11111112\\ 41111,411 200 Const. Mgmt. 11 it N r-0 288 1,380 1,390 v 3,058 Construction 9,500 9,500 S St. 19,000 TOTAL EXPENSES 19 200 878 248 2,843 10,880 10,890 0 0 25,958 FUND SOURCES Awarded PSRC Grant 248 1,252 1,500 Awarded WSDOT Grant 302 5,698 6,000 12,000 Proposed Grants I 5,000 3,429 8,429 Solid Waste Utility Tax 650 700 700 710 720 549 4,029 City Oper. Revenue 19 200 228 (700) 589 (528) 741 (549) 0 0 TOTAL SOURCES 19 200 878 0 1,289 10,880 10,890 0 0 25,958 2021 - 2026 Capital Improvement Program 9 50 Project Location 't,.... . ` N \ i �� \\`�`- ,�®� . 1e a y`\ . r `T/i �r ��' --'V bT hoe, 1 `\4 Ld '401 IL I \\\ .11111112\\ 41111,411 4 \ S 11 it N r-0 1 P v r S St. 2021 - 2026 Capital Improvement Program 9 50 City of Tukwila 42nd Ave S Bridge Replacement Update March 2022 Questions and Answers from the 2/14 COW (1 of 6) • Who makes the ultimate decision for bridge type and location? • Council makes the decision for the replacement location • Is an EIS study required for the 42nd Ave S Replacement? • An EIS is not required for the bridge replacement. However environmental permits will be filed for the replacement. • Would a traffic signal be placed at S 124th and 42nd Ave S intersection? • A Traffic signal is not warranted at the S 124th St and 42nd Ave S intersection. • Allentown Community has concerns about truck speed on S 124th. • City staff will evaluate the traffic conditions and implement traffic calming in the Allentown Neighborhood. • Bridge alternatives are not decided at the 2/14 COW? • Correct, Council will only discuss bridge alternatives. • Will the same information be shared at the next upcoming Allentown meeting • Yes, same information will be presented at the Allentown meeting. 2 City of Tukwila 142nd Ave Bridge Replacement 52 Questions and Answers from the 2/14 COW (2 of 6) • What do the scores on the matrix fully represent. • City staff receive definitions from TranTech regarding the category and weighted numbers • Will the Allentown meeting be advertised as 42nd Ave and S 124th? • Yes, the project has been labeled 42nd Ave S and S 124th St replacement • What is the cost difference between the most expensive and least expensive option? • The difference is $4,453,879 or approximately 20% of the total amount. • What material lasts longer, steel or concrete? • Both steel and concrete have a 75+ year design lifespan. • Why is Council being presented the different materials if both have the same life span? • City staff wanted to present Council all the alternatives for the bridge replacement. • Is the 500 -year flood verses the 100 -year flood all elevation based? • Yes, the S 124 St bridge elevation is higher than the 42nd Ave S location. 3 City of Tukwila 142nd Ave Bridge Replacement 53 Questions and Answers from the 2/14 COW (3 of 6) • Why was the 42nd Ave S Bridge constructed in the current location and not at S 124th St. • The 42nd Ave S Bridge was constructed in 1949, with no evidence on why that location was selected • What is the traffic flow at 42nd Ave S and Interurban Ave and S 124th St and Interurban Ave? According to the traffic flow analysis, the current level of service (LOS), taken prior to the strike, at the intersection of 42nd Ave S and S 124th St is a "B" and the LOS at 42nd Ave S and Interurban Ave S is a "C". If the bridge is replaced at 42nd Ave S (its existing location), the 2040 traffic calculations state that the LOS at 42nd Ave S and 124th Ave S would remain a "B" and the 42nd Ave S and Interurban Ave S would increase to a "D". If the bridge is replaced at 124th Ave S, the projected LOS at S 124th and Interurban Ave is a "B" with a signalized intersection, and LOS at 42nd Ave S and 124th Ave S would remain a "B". In this calculation, "A" is a better LOS and "D" is a worse LOS. • What is community's the feedback? The Allentown community has indicated they prefer the 42nd Ave S alternative. City wide survey is available for residence and users of the bridge to leave their feedback. • Do not lose sight that the bridge replacement does not stop the truck reroute study. Correct, this is the 42nd Ave S Bridge replacement project that runs parallel with the Allentown Truck Reroute project. 4 City of Tukwila 142nd Ave Bridge Replacement 54 Questions and Answers from the 2/14 COW (4 of 6) • What time was the 2/22/2022 Allentown meeting at? • The Allentown meeting was conducted at 5:30 pm on 2/22/22 at the Tukwila Community Center. • Can truck traffic be limited once new bridge is constructed? • The new structure will be constructed to the WSDOT Bridge Design Manual LRFD standards and without an engineering study to illustrate the impacts to the infrastrucure from trucks, restrictions cannot be enforced. • Can the City of Tukwila be involved with the selection process? • Yes, residents can answer the survey posted on the City's website to provide feedback • How far does the 42nd Ave S corridor extend? • The 42nd Ave S corridor extends the length of 42nd Ave S and the new structure is required to connect Interurban Ave to 42nd Ave S. • Is 48th Ave outside of the current corridor? • 48th Ave is not in the 42nd Ave S corridor. • What is the length of the current structure and length of the future structure? • The current 42nd Ave S Bridge has 220 ft main span. The proposed 42nd Ave S Bridge has a main span of 250 and the S 124th St has a main span of 220 ft. 5 City of Tukwila 142nd Ave Bridge Replacement 55 Questions and Answers from the 2/14 COW (5 of 6) • Will the old structure be used for the temporary bridge during construction of the new 42nd Ave Bridge? • The old superstructure could be used as the temporary structure during construction. • How much additional space is needed to construct the S124th St bridge and which properties would be affected? • TranTech is providing cross sectional of the S 124th St and 42nd Ave S intersection. • Will the property's at 42nd Ave S and S 124th St be impacted? • There will be impact to property's during construction. • Have the homeowners been contacted about the intersection? • Properties owners have been contacted during the Allentown meeting. • Will the Allentown meeting be virtual or in-person • The Allentown meeting was in-person at the TCC on 2/22/22. 6 City of Tukwila 142nd Ave Bridge Replacement 56 Complete 3rd Quarter 2023 approx. 275 working days 42nd Ave S Steel $24,372,157 75+ years Questions and Answers from the 2/14 COW (6 of 6) Item Cost Design life Design Timeline Construction Timeline Seismic Design Traffic Flow Annual Maintenance Costs Right-of-way Rated for a 1,000 year return event earthquake Same traffic configuration $2,000/year City owned ROW 42nd Ave S Concrete $25,957,499 75+ years Complete 3rd Quarter 2023 approx. 275 working days Rated for a 1,000 year return event earthquake Same traffic configuration $1,000/year City owned ROW City of Tukwila 142nd Ave Bridge Replacement S 124th Ave Steel $21,503,620 75+ years Complete 3rd Quarter 2023 approx. 253 working days Rated for a 1,000 year return event earthquake New added signal at S 124th and Interurban Ave $2,000/year City owned ROW and small improvements to Northeast and Southeast corners at S 124th and 42nd Ave S Intersection S 124th Ave Concrete $22,962,950 75+ years Complete 3rd Quarter 2023 approx. 253 working days Rated for a 1,000 year return event earthquake New added signal at S 124th and Interurban Ave $1,000/yea r City owned ROW and small improvements to Northeast and Southeast corners at S 124th and 42nd Ave S Intersection 57 Is a Transportation Impact Analysis (TIA) required? • A TIA is not required for this project as the new bridge structure does not generate new or additional traffic. TIA's are required for new developments (I.E. shopping centers, housing developments...) as traffic patters will change. The proposed replacement of the 42nd Ave S Bridge will see the same traffic. • A traffic analysis was performed as part of the TS&L and studied the level of service (LOS) at the affected intersections with today's traffic volume and traffic volumes in 2040. • Please refer to page 129 of the TS&L for the traffic analysis. 8 City of Tukwila 142nd Ave Bridge Replacement 58 2/22/2022 Allentown meeting • Staff conducted an Allentown meeting on Tuesday, February 22nd at the Tukwila Community Center. • A 3D model was present for attendees to visualize both alignments. Please see the photograph below of the 3D model • There were approximately 45 individuals that attended the Allentown meeting. The City received 27 votes for the preferred location. Please see the next slides with total votes and comments left by attendees. • Please see the next slides of input given at the Allentown meeting 9 City of Tukwila 142nd Ave Bridge Replacement 59 Input from the 2/22/2022 Allentown meeting E E ,FtrMR9: U IkLC R igR9 a-ilkc"-Wsl SES iF7,1011.1111 25 Win ITPLI 30 CC:4 s.xsoVP�u,vsm� ,« 2 s 1022C fre,,r:c_J op -44 CD tel /8'u5�;�rC. _Br kW() Semis 6414 tYC vn4/ iNnn \.7,0 10 City of Tukwila 142nd Ave Bridge Replacement What else should we know? 60 Input from the 2/22/2022 Allentown meeting Bridge Location — 42nd Ave S ailI Pros 1.010.6 TSA TS, nss. p..c .1vnrs �E.,wns.7y 5r:+t - SA* TA Cons Bridge Location — 42nd Ave S Pros ',PVT -1--A 5 al. oies taysii s1St35 11 City of Tukwila 142nd Ave Bridge Replacement 61 Input from the 2/22/2022 Allentown meeting Bridge Location — S 124th Street TVA I C IPros SANZa mot* F VL WWI Cons 12 City of Tukwila 142nd Ave Bridge Replacement 62 42nd Ave S Alignment • Pros . . • Pros & Cons Familiar traffic pattern No impacts to private property Allentown residents preferred option • Cons • Possible hydrological/scour issues • Temporary structure during construction required and impact to the splash park • Most expensive option S 124th Street Alignment • Pros • • • Best hydrological placement and flood rating Traffic control during construction Least expensive option • Cons . . . • • • Unfamiliar traffic pattern Potential impacts to private property Allentown residents do not prefer this option Residents feedback that the trucks will barrel through 124th Residents feedback that possible environmental and wildlife disturbance Adverse affects on the superette store 13 City of Tukwila 142nd Ave Bridge Replacement 63 Recommendation Staff recommends 42nd Ave S steel girder alternative due to community feedback. 42nd Ave S Bridge Renderings 42nd Ave S Bridge Elevation Looking North Rendering 42nd Ave S Bridge Elevation Looking North Rendering 65 S 124th Street Bridge Renderings S 124th St Bridge Looking East Rendering S 124th St Bridge Elevation Looking North Rendering 66