Route 37 Improvements

  • Route 37 Improvements - Cranston, Warwick
    Route 37 Improvements - Cranston, Warwick
  • Pontiac Ave Bridge Deck
    Pontiac Avenue Bridge Deck
  • RIDOT Division Street Bridges Project
    Route 37 Improvements - Cranston, Warwick
  • Route 37 Improvements - Cranston, Warwick
    Route 37 at Jefferson Boulevard, Warwick

The Project

Improvements to Route 37 will be made in two separate projects that will rehabilitate or replace 22 bridges and make safety and congestion improvements in this critical east-west freeway in central Rhode Island, linking the cities of Cranston and Warwick, major retail, office and residential areas, Interstate highways and Rhode Island T.F. Green International Airport. With a daily traffic count of 42,000 vehicles, Route 37 is one of the state's busiest corridors..

Built in the 1960s, this freeway’s bridges are now deteriorating under increasing vehicular volumes and freight demands. Almost half of the Route 37 bridges are classified as being in poor condition.

We are grateful for the efforts of Rhode Island’s Congressional delegation in securing a $20 million TIGER grant for Phase 1 and a $21 million BUILD grant for Phase 2 to make these improvements possible.

Phase 1 – Bridge Group 51A

The first project is underway now, and involves preservation, major rehabilitation, and/or reconstruction of 15 bridge structures between Route 1 (Post Road) in Warwick and the Pontiac Avenue interchange in Cranston. Six of these bridges are structurally deficient. Four of them will be replaced and the other two will be rehabilitated.

Our project also includes safety improvements at the Pontiac Avenue interchange from Route 37 West, widening the highway and ramps to eliminate chronic congestion and improve safety.

Phase 2 – Bridge Group 51B and the Cranston Canyon

The second contract will rebuild six bridges and build one new bridge along the Route 37 corridor west of Pontiac Avenue in Cranston. But it also will make a number of improvements to improve safety and reduce congestion at the interchange of Route 37 and I-295 and along I-295 itself in the section commonly known as “Cranston Canyon” because of the rocky walls along the highway. These include:

  • Creating a third lane at I-295 North with new pavement and minor widening, which will work as an auxiliary lane from Route 37 heading north
  • Extending this auxiliary lane northbound to the Route 6 interchange in Johnston
  • Shifting the ramp from Route 37 East to I-295 North from the high-speed lane to the right lane, improving safety and reducing conflicting movements
  • Repositioning the ramp from I-295 North to Route 37 West to eliminate a conflicting weave
  • Widening the ramp from Route 37 West to I-295 North to improve sight lines and reduce crashes

Phase 3 – Route 37 Right Size

The project will replace and rehabilitate six bridges carrying Route 37 over local roads, arterials, and rail lines, as well as right-sizing the highway corridor to ensure it meets Rhode Island’s transportation needs, as Route 37 was overbuilt and a proposed highway extension and bridge over Narragansett Bay was never built.

Learn More

Project Schedule & Cost

  • Location: Cranston/Warwick
  • Start Phase 1 Construction: 2020
  • Finish Phase 1 Construction: 2023
  • Total Projected Cost Phase 1: $79.5 Million
  • Start Phase 2 Construction: 2022
  • Finish Phase 2 Construction: 2026
  • Total Projected Cost Phase 2: $85 Million
  • Start Phase 3 Construction: TBD
  • Finish Phase 3 Construction: TBD
  • Total Projected Cost Phase 3: $100 Million (estimated)
  • Detours Needed: Yes

Additional Information & Graphics

Appendices D&E Test Pit and Soil Boring Logs
Appendix B Release Notification
Appendix C Phase I Environmental Site Assessment Report
Appendix F Laboratory Data Reports
Site Investigation Report 11-22-2022 Main Body

DEM Environmental Report

As part of the above project, environmental investigation activities were performed along the shoulders and median of I-295 and on Cranston Street and the Washington Secondary Trail bike path to help guide soil management activities during construction and determine whether potentially hazardous materials are present in the areas where construction is being performed. Results of the environmental investigation have been compiled into a site investigation report that was submitted to RIDEM. A copy of the report is available for review below. For additional information regarding the environmental investigation or to make arrangement to review environmental records pertaining to this project, please contact Jeff Crawford at RIDEM at (401) 222-2797 x2777102


Bridge Group 51A: Pontiac Avenue to Post Road

By early next week, we are slated to open the new, and start to remove the old, Pontiac Avenue ramp to Route 37 West. Travelers can expect daytime alternating lane closures for electrical work on Pontiac Avenue itself, from Sockanosset Cross Road to the Route 37 ramps, weekdays from 9 a.m. to 3 p.m. We also plan to install guardrail behind barrier on both sides of the Pawtuxet River North Bridge (carrying Route 37 over the Pawtuxet River) and down the I-95 South ramp to Route 37. Pending availability of asphalt and concrete, we are also scheduled to pave both sides of the Pawtuxet River North Bridge, and place sidewalks at the intersection of Pontiac Avenue and Sockanosset Cross Road.

Bridge Group 51B: I-295 area

On Monday night, starting at 8 p.m., we will shift traffic on I-295 North in the vicinity of Phenix Avenue to the east to create a new work zone along the left shoulder. Motorists can anticipate alternating lane closures in this area on Sunday night, prior to the shift, through Friday morning at 5 a.m., when the overnight operations conclude. Travelers can also expect a right lane closure on I-295 South in the vicinity of Route 37 for overnight bridge work, Sunday-Thursday nights from 8 p.m. to 5 a.m., and alternating one-way traffic, with frequent vehicle access in/out of the work zones, for daytime bridge work on Cranston Street, below Route 37, Monday-Friday from 6 a.m. to 4 p.m.

Click here for the latest lane closure information