FTCSHT_2024_Bridge_413.7_Rehabilitation.pdf
PDF 2 MB Posted
- Solicitation number
- 26-21-214666 ARRC As-Needed Large Bridge Design & Inspection
- Issued by
- Anchorage Municipality, Alaska
About this file
This document is a project fact sheet for the Alaska Railroad Corporation (ARRC) describing the Bridge 413.7 Rehabilitation project located over the Tanana River in Nenana, Alaska. The project involves comprehensive rehabilitation of an existing 1,298-foot, 12-span thru truss bridge at milepost 413.7. Work scope includes rehabilitating the thru truss, deck truss and deck girders, realigning or replacing expansion bearings at pier 12, shortening the northern approach span, stabilizing pier 12 to prevent future movement, and repairing concrete spalls. As of the document date of February 12, 2024, the project was 30% designed with preliminary studies and environmental reviews initiated in fall 2022. The ARRC projects bidding to occur in the fourth quarter of 2024, with construction anticipated to begin in the third quarter of 2025 and continue into the third quarter of 2026, with project completion targeted by the end of 2026.
The project is estimated to cost $62 million and will be funded through an 80% Federal Transit Authority formula funding with a required 20% local match from ARRC. The project's purpose is to extend the bridge's useful life span, enhance stability of track infrastructure, protect critical state infrastructure, improve safety for ARRC and customers, and maintain overall railroad reliability and facility safety. Additional information regarding the project is available through the ARRC Bridge Program, accessible via AlaskaRailroad.com under Corporate Projects, or by contacting the Alaska Railroad at Public_Comment@akrr.com. The associated RFP 26-21-214666 for Large Bridge Inspection and Load Rating Services for this bridge among others was scheduled to open May 28, 2026, with proposals due June 18, 2026, at 3:00 p.m. local time in Anchorage.
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Text version
February 12
Bridge 413.7 Rehabilitation
Talkeetna
MP 227
Denali
MP 348
Fairbanks
MP 470
Cantwell
Whittier
MP FO
Seward
MP 3
Eielson MP G24Nenana
MP 412
Healy
MP 358
Hurricane
Willow
Wasilla
MP 160 MP A6.5
Anchorage
MP 114
Palmer
Pa rks
Hwy
Glenn Hwy
Alaska Railroad
Richardson Hwy
N
S
EW
Talkeetna
MP 227
Denali
MP 348
Fairbanks
MP 470
Cantwell
Whittier
MP FO
Seward
MP 3
Eielson MP G24Nenana
MP 412
Healy
MP 358
Hurricane
Willow
Wasilla
MP 160 MP A6.5
Anchorage
MP 114
Palmer
Pa rks
Hwy
Glenn Hwy
Alaska Railroad
Richardson Hwy
Portage
MP 64 N
S
EW
MP 319
MP 186
Project Description The Alaska Railroad Corporation (ARRC) proposes to rehabilitate the existing 1,298-foot, 12-span, thru truss bridge at ARRC milepost (MP)
413.7 over the Tanana River in Nenana, Alaska.
The work consists of rehabilitating the thru truss, deck truss and deck girders, and realign or replace the expansion bearings at pier 12, shortening the northern approach span, stabilizing pier 12 to prevent future movement, and repairing concrete spalls.
Purpose and Need The project will rehabilitate the existing structure to extend its useful life span. The purpose of this project is to enhance the stability of the track infrastructure, protect critical state infrastructure, improve safety for the ARRC and its customers, and maintain safety of the bridge, providing reliability of the railroad and its facilities. General bridge rehab benefits are outlined in the Bridge Program fact sheet available at AlaskaRailroad.com.
Status
• Preliminary project studies, environmental reviews, design and permitting where started in the fall of 2022. The project is currently 30% designed and preparing to submit the NEPA documents to FTA.
• Project projected to be bid in the fourth quarter of 2024 with construction projected to begin third quarter 2025 and will continue into third quarter of 2026.
• Project estimated to be complete by end of 2026.
Bridge 413.7 crosses the Tanana River near Nenana.
MP 413.7
Alaska Railroad Bridge 413.7 Rehabilitation • Page 2 to Fairbanks
Cost and Funding The project cost is estimated to be $62 million. Funding is anticipated to be 80% Federal Transit Authority formula funds with a required 20% match from ARRC.
More Information For more project information, email the Alaska Railroad at Public_Comment@akrr.com. The ARRC Bridge Program fact sheet is available online at AlaskaRailroad.com > Corporate > Projects (look under Systemwide Projects).
Project Area - Bridge MP 413.7 Side View
East view of bridge 413.7, the bridges’s top chord will be rehabilitated, as well as hangers and interior floor beams.
Deck plate girders will be rehabilitated on Bridge 413.7.
Project Area - Bridge MP 413.7 Top View to Anchorage to Fairbanks
File details come from the government source that posted it. Updated .