I-10 Cedar Avenue

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Planning
Environmental
Design
Construction
Completion

Project Overview

The San Bernardino County Transportation Authority (SBCTA), the County of San Bernardino, City of Fontana, and City of Rialto are improving Cedar Avenue between Bloomington Avenue and Orange Street in the unincorporated community of Bloomington. As a major north-south arterial that experiences high levels of traffic congestion resulting in low levels of service, the project is designed to relieve congestion, enhance safety, and improve traffic operations. The project will:

Widen Cedar Avenue from six lanes to 10 lanes
Provide new bridge railings and sidewalks on Cedar Avenue
Replace Cedar Avenue over the train tracks
Add additional lanes at the on- and off-ramps

Cedar Avenue Bridge Reconstruction

The Cedar Avenue Bridge over the I-10 and the railroad tracks will be widened in two stages.

The first stage, crews will complete the east side of the bridge over the I-10 freeway. During this time, traffic will be shifted to the opposite side (east half) of the bridge to allow crews to safely reconstruct the sidewalk and concrete barrier on the west half of the structure. To accommodate this shift, one lane will remain reduced in each direction on Cedar Avenue between Orange Street and Valley Boulevard. Traffic delays should be expected during bridge reconstruction, please allow extra time to reach your destination and use caution when traveling through work zones. Alternate routes will include Slover Avenue or Valley Boulevard to Riverside Avenue to the east and Sierra Avenue to the west. Crews are also completing bridge reconstruction of Cedar Avenue over the railroad tracks.

Following the reconstruction of the east side of the bridge, traffic will shift to the newly constructed portion of the bridge to allow for reconstruction of the west side of the bridge.

Crews Perform Cast-in-Drilled Hole (CIDH) Foundation Work Over the Union Pacific Railroad

Crews have completed CIDH (Cast-In-Drilled-Hole) pile installation for the new Cedar Avenue bridge over the railroad and are now beginning construction of the bridge abutments, which will support each end of the new bridge. Work is currently underway at the first of two bridge abutments and is expected to continue for approximately three weeks. Crews will build the concrete support structure at the end of the bridge, including installing reinforcing steel, placing concrete, allowing the concrete to cure, and backfilling the area. Crews will also construct an exterior wall, which helps hold the surrounding soil in place and supports the transition between the bridge and the roadway. During this phase of construction, residents and commuters may notice construction equipment, additional construction trucks traveling through the area, and construction noise near the work zone. Work schedules may change based on field conditions.

Project Webinar
SBCTA hosted a webinar on Thursday, February 9, 2023 to provide an overview about the I-10/Cedar Avenue Interchange Project.
To watch the webinar, click the image below.

Fact Sheets

Bloomington MAC Presentations

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Project Reports

Final Initial Study with Mitigated Negative Declaration/Environmental Assessment with Finding of No Significant Impact

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There are no closures scheduled for the week of September 6. All work will take place in protected work zones behind concrete barriers, also known as K-rail. At times, this work may be loud or cause dust and vibration. Traffic delays are expected. Motorists are encouraged to plan ahead, allow extra time to reach their destination, or use alternate routes when possible.

Construction will generally occur Monday through Friday during daytime hours (6:30 a.m. to 3:00 p.m.) and Sunday through Thursday during nighttime hours (8:00 p.m. to 5:00 a.m.).

All construction is dynamic, weather-permitting, and subject to change. Visit the project Google Map for the most up-to-date closure information and available detour routes.