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 continue construction of the new Cedar Avenue bridge over the railroad. Portions of this work are occurring below ground level with CIDH pile installation. CIDH installation is an important part of the bridge’s deep structural support system and is expected to continue through August. Work is now underway at the second of two foundation locations. A CIDH is created by using large drilling equipment to create deep holes in the ground. The depth of the hole is predetermined and based on the soil conditions, type of bridge, etc. Steel reinforcement cages are then placed into the drilled holes, and followed by concrete poured into the hole to create reinforced concrete columns. These deep foundation elements transfer the weight of the bridge into stable soil or rock below the surface. The columns will support other bridge elements including the deck (the top part where people and vehicles travel on). During this phase of construction, residents and commuters may notice large drilling 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.