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Home My WebLink AboutCOW 2022-02-14 Item 4E - Powerpoint Presentation Shown at Meeting - 42nd Avenue South Bridge ReplacementCity of Tukwila 42nd Ave S Bridge Replacement February 2022 Presented with TranTech Engineering, LLC 1 TRANTECH Engineering LLC 42nd Ave Bridge History • Prior crossing at 124th (Riverton Draw Bridge) • Bridge replaced at 42nd Ave (1949) • These two locations considered for replacement • Local Bridge Program (FHWA) funds procured for replacement • Grant funds require the bridge to be replaced within same corridor Riverton Draw Bridge at S 124th St 2 City of Tukwila 142nd Ave Bridge Replacement 42nd ';57ve S & Allentown Bridge._ • '16›. Tukwila C Center TRANTECH id 'Engineering LLC Timeline 1949 —Existing Bridge built 2017 —Applied for state bridge grant (BRAC) — not received 2019 —Applied for state bridge grant (BRAC) — not received 2020 —Council approves 30% Plans and Estimate (P&E) - $1.1 M City Funds 2021— Received PSRC and Local Bridge Program funding - $1.5M + $12M 2022 — 42nd Ave Bridge included in pending State Transportation Package - $17M 2022 —Complete TS&L and 30% P&E 2023 — 3rd quarter complete 100% Plans, Specifications, and Estimate (PS&E) bid -ready 2024 — Start construction 2025 —Construction complete by 4th quarter 3 City of Tukwila 142nd Ave Bridge Replacement TRANTECH III1Engineering LLC 2022 Timeline January 18th — TIC — Project Update February 14th — COW — TS&L update February 22nd — Allentown Community Meeting and continued outreach March — Additional outreach through South Seattle Chamber of Commerce March — TS&L submission to Local Programs (WSDOT) for review March 22nd - Monthly Allentown Community Meeting March - Council direction for bridge location • Design needed to progress the project Reminder for 2022 • Continue to look for additional construction funding • Advance design to 30% and 60% 4 City of Tukwila 142nd Ave Bridge Replacement TRANTECH Id 'Engineering LLC Current Funding Summary Funding Source Amount Matching Requirements Project Phase Local Tukwila Funds $1.1 M Puget Sound Regional Council Contingency $1.5 M Funds N/A Not Required Local Bridge Program Federal Funds through $12 M WSDOT 13.5% required for construction if not obligated by 2024 Washington State Legislature Transportation $17M Package (pending) N/A 5 City of Tukwila 142nd Ave Bridge Replacement Design Design Construction/right- of-way Construction TRANTECH id 'Engineering LLC Key Decisions for the TS&L Report • Type — • Two configurations used at both locations • Steel plate girders • Pre -stressed concrete girders • Size— • Width- two 12 ft travel lanes with an ADA -approved pedestrian path on the upstream side • Span length dependent on bridge location • Location — • Current location at 42nd Ave South • S. 124th alignment 6 City of Tukwila 142nd Ave Bridge Replacement TRANTECH III 'Engineering LLC Alternatives Analysis- 42nd Ave S Alignment Estimated TS&L Cost: $24.4M Total Cost (includes construction, design, construction management, inflation, and contingency) 7 City of Tukwila 142nd Ave Bridge Replacement TRANTECH Id 'Engineering LLC Bridge Plan and Elevation — 42nd Ave S Concept • Steel Plate Girder Superstructure • 255' main -span with 30' approach spans • Min 3 -foot clearance with respect to 100 -year flood .more MP MireLIWIffrelfi mac``- �.��![fl1111I11,04 :.ASlHG SYCflIHO 8 City of Tukwila 142nd Ave Bridge Replacement --- .ST PER 1P90RLE12 SW, 213.113GEEARE13 4214D. VES 81E�N BRIDGE PLAN HCH VAT. El 15.10 ROAD. £1A CAM -22 ----- Tukwila 3141. 1'61A EF-Nanu II I • !1r-R40NI:i SLAB BRIDGE ELEVATION Iff9912Ril1E S -44T Community Center TRANTECH IN /Engineering LLC Bridge Typical Section — 42nd Ave S Concept • 42.5' wide cross section of bridge • 10' wide sidewalk on the west side • (2) 12' Travel lanes and 2' shoulders • Aesthetically pleasing bridge rail selected by community ROADWAY 12'-0" 12'-0" 1'-6' 1Y-0" 1'-6' r:1 . • a 1 SHY LANE PROFILE GRADE &PIVOT POINT 2.0% 1 LANE 1 2.0% SHY BARRIER SOW( C C C M0o - , r co ' o; u o>oo , `ak 11"1111 . i 2'-1 X" GIRDERB I I 3 SPA @ 11'-9" = 35'-3" ,JIGIRDERA GIRDERC W GIRDER II STEEL PLATE GIRDER SPACING MEASURED NORMAL TO ROADWAY 42-6' 9 City of Tukwila 142nd Ave Bridge Replacement TRANTECH III 'Engineering LLC Road Plan gt Profile 42nd Ave S Alignment • Match existing prior to Interurban intersection • Match existing elevation before Tukwila Community Center main driveway • Rebuild maintenance driveway • Existing 5' planter and 5' sidewalk connect well to 10' sidewalk on bridge 30. 1P 41 3ff 617 10 City of Tukwila 142nd Ave Bridge Replacement 72 T -----------= 72 — 6 16 V.; 11 C. 30 t ds . ., _ ., 16 03 S= l' - oa 1- 33 .• VY 31 SE S III ag le AD 19 !x 42nd AVE S Profile aikwila. ommunity Center rru..ms bei0Vi ' TRANTECH IIIIEngineering LLC Temporary Detour for 42nd Ave S Alignment Maintain existing facilities (if feasible) Maintain slip lane Temporary bridge structure Wide NB lane to accommodate truck turning Maintain traffic signal 11 City of Tukwila 142nd Ave Bridge Replacement TRANTECH 'Engineering LLC Trail Connection — 42nd Ave S Alignment • 14' wide path • 10' clearance under bridge (bicycles, horse riders, and pedestrians) • Less than 5% grade, or less than 8.3% with a landing every 2.5' vertical • Natural concept preferred based on community input at September 15, 2021 Gallery Day and online survey Landscape Concept 2. Natural 12 City of Tukwila 142nd Ave Bridge Replacement - Emphasis on enhancing the ecology through plantings of native vegetation - Opportunities for pathways - Best for stormwater and habitat - Reinforces Green River Trail character - Pedestrian -friendly lighting recommended TRANTECH In Engineering LLC Alternatives Analysis- S 124th St Alignment connects to Interurban Avenue South *example of a steel superstructure bridge similar to the proposed configuration of the S 124th St Bridge Estimated Cost Range: $21.5M Total Cost (includes construction, design, construction management, inflation, and contingency) 13 City of Tukwila 142nd Ave Bridge Replacement TRANTECH Engineering LLC Bridge Plan and Elevation — S 124t" St Alignment • Precast pre- stressed steel Superstructure • 220' main -span with 60' approach span west and 20' approach span east • Min 3 -foot clearance with respect to 100 -year flood APtittSemrittilt 1,_T ST Weal& 11.4424 rrrr ;Da 114 -tut .1 — L Cihtolt311‘ bud 14 City of Tukwila 142nd Ave Bridge Replacement iliTRANTECH Engineering LLC Bridge Typical Section S 124th St Alignment • 42.5' wide cross section of bridge • 10' wide sidewalk on the west side • (2) 12' Travel lanes and 2' shoulders • Aesthetically pleasing bridge rail selected by community F.OADINAY ...i. . .1•:-.. , . 0 I i PRO.ILE GRACE A PIVOTPOIN— " I .. ,, .. LONE 2.3% . E 4; BARRIER fl. ; 1 1 1 l' ' 1 .1- - ___ i- - F -- 1 7-- --,-- 1 P— --1——I I ., I .__ . ., .4'1. . . . •.. - L. ... , • . . 1-- .,. .•:.:,,, ..., ..," , .... - .- . . _ i ,- _ _ 1 , G1LRA t GDER E. 5 -PA .p 114 - 3E,3" GeRDER C 117EL PLATE G ER GPA CI h13 MEA.3 JR:EI NORVAL TO R{D AD WAY 47—E' 15 City of Tukwila I 42nd Ave Bridge Replacement TYPICAL SECTION - SPAN 2 TRANTECH III1Engineering LLC Road Plan & Profile 124th • Truck Aprons at Signal Interurban Ave for WB -67 Turning Movements (RAB option too) • One Way Superette Parking Lot • NE corner properties coordination for driveway 30 15 0 30 SCALE 15 FEET 584-00 57.05 ,TS ------ ---- VP1 STA -52.13,02 VR EL -4186. .-5-40-74 - _ _ VPF STA- ---- 1 1 .. J....___ _ 8 & Iy __ Si_-____ __ 100 TS ______-____________ __ VPI EL -19.52 VCL2.9P . Y j$ a, C Yf ®® LP STA -55.8795 2 — a 0 .1 _2 F — 1 1 1 -- I n -- _ , - -- - - - a I. 1 7sc0 aeR11 I I-- It SER" I I. I h traps,__ 1 ,I 1 -- 1 I'. S -_ — - 1 49-15 u 50 AIN CO �ffi Nm M 51 m 00 u m °-S 52 00 5 8 S3 53-00 5 �w VI -, .8 a, 54 tl.. -00 .. .; a 55 -90 55 ® ,( 56 50 S 124TH ST - PROFILE 16 City of Tukwila 142nd Ave Bridge Replacement 5 C EngiTRANTEneering CLLHC Trail Connection — 124t" Option • 14' wide path • 10' clearance under bridge (bicycles, horse riders, and pedestrians) • Less than 5% grade, or less than 8.3% with a landing every 2.5' vertical • Connection can be one straight connection or a switchback a Iterurban Ave & S 124th St Bridge - Option 1 I T i 11 1 I di 1 1 1- .1 u 1 it 1 111 141° 1- �. rqa-......+aa,l...r Imr.fLEAr•c•..rrialA mCL T-0nn MINI IL.L 1x 1.yy.a., F. _-1 a1 17 City of Tukwila 142nd Ave Bridge Replacement 11 I I i i i- 11 ii - 1 1 1 Ir• a— l l i l .el -IT1 R 5S November 1, 2021 FIGURE Ira reFo _.,.. TRANTECH IIIIEngineering LLC Alternative Cost Table Bridge Alignment Total Approximate Costs 42nd Ave S Concrete Girder 42nd Ave S Steel Plate Girder S 124th Ave S Concrete Girder S 124th Ave S Steel Plate Girder 1A $24,372,157.00 2A $25,957,499.00 1B 2B 18 City of Tukwila 142nd Ave Bridge Replacement $21,503,620.00 $22,962,950.00 TRANTECH Engineering LLC Alternative Comparison Matrix Environmental: Ill Natural River Flow Conditions Permittability Importance Factors (out of 100) AlignmentA 42nd Ave S Alignment B S 124th Street Alt. 1A concrete girders 3 spans Alt. 2A steel plate girdersl 3 spans Alt. 1B concrete girders w 3 spans Alt. 2B steel plate girde' 3 spans 15 15 2 1 2 1 1 2 1 2 Social: Temporary MOT Impacts Aesthetics 15 15 2 2 2 2 1 2 1 2 Costs: Construction Costs (Bridge and Approaches) Right of Way Requirements 25 15 4 2 3 2 2 3 1 3 Total Score: Sum (Importance Factor x State) 100 235 210 185 160 *The alternative with the combined lowest score is the most optimized alternative with respect to the chosen desired criteria 19 City of Tukwila 142nd Ave Bridge Replacement TRANTECH 101 Engineering TS&L Report • Advance S 124th Street Steel Superstructure Alternative to Construction Documents • Advantages to the S 124th Street Steel Bridge • Best hydrological placement • Preferred permitting • Traffic control during construction • Least expensive option • Adequate soil condition • No turning movements at the 42nd Ave S and S 124th St intersection. • Total Construction Cost at $21.5M — Escalated to 2024 Construction • Construction Duration at 12 months 20 City of Tukwila 142nd Ave Bridge Replacement *example of a steel superstructure bridge similar to the proposed configuration of the S 124th St Bridge 'Li TRANTECH Engineering LLC Engineering LLC Next Steps • February 22nd Allentown community meeting • March 22nd Allentown community meeting • Direction from Council by end of March 2022 • Design need to determine option to move forward • TS&L submission to Local Programs (WSDOT) • City to apply for additional federal grants • Advance design with council approval • Design complete 2023 • Construction begins 2024 21 City of Tukwila 142nd Ave Bridge Replacement TRANTECH Engineering LLC Input 22 City of Tukwila 142nd Ave Bridge Replacement Comments TRANTECH III1Engineering LLC