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Interstate 580/Corral Hollow Road Interchange Bridge Improvement Project

Active

State & Local

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

AI Contract Overview

Caltrans, in coordination with the City, is preparing to upgrade the existing Interstate 580/Corral Hollow Road interchange in Tracy, California, to address current and anticipated traffic congestion linked to the development of the Tracy Hills Specific Plan. The current Tight Diamond interchange, featuring single-lane ramps and two-way stop control, will be transformed into a Diverging Diamond Interchange to improve traffic flow, safety, and capacity. This redesign includes widening and upgrading the Corral Hollow Road Overpass to support four continuous lanes and adding a new concrete barrier alongside a dedicated center-running bike and pedestrian path. New two-phase traffic signals will be installed at both the eastbound and westbound ramp intersections, with crosswalks striped at key points to enhance pedestrian access. Two design options are under consideration for the eastbound on-ramp crossing over Corral Hollow Creek: Option A proposes widening the existing bridge to add a lane and paved shoulder, while Option B calls for complete replacement of the structure. The project spans post miles 7.6 to 8.6 along I-580 in San Joaquin County and is part of a broader multimodal initiative aimed at accommodating increased vehicle, bicycle, and pedestrian volumes. The agency responsible is Caltrans District 10 – Stockton, with Jonathan Coley listed as the primary point of contact for inquiries.

General Info

Caltrans upgrades I-580/Corral Hollow interchange to diverging diamond with new lanes, bike path, and signals.

Agency

California → Caltrans, District 10 - Stockton

NAICS

237310 - Highway, Street, and Bridge ConstructionView NAICS

Place of Performance

Interstate 580 and Corral Hollow Road, Tracy, CA, 95377

Set-Aside

NONE

Documents

(5)

Notice of Completion for Interstate 580/Corral Hollow Road Interchange Bridge Improvement Project

PDF•notice-of-completion

Notice of Intent to Adopt Mitigated Negative Declaration for I-580/Corral Hollow Road Interchange

PDF•special-notice

1Q550 Summary Form for Interstate 580/Corral Hollow Road Interchange Bridge Improvement Project

PDF•environmental-summary

Interstate 580/Corral Hollow Rd Interchange Bridge Improvement Initial Study and Mitigated Negative Declaration June 2026

PDF•initial-study-mnd

Notice of Intent to Adopt Initial Study with Proposed Mitigated Negative Declaration for I-580/Corral Hollow IC

PDF•public-notice

AI Contract Breakdown

Uniform Contract Format

Timeline

PostedJul 8

forecast

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Organization & Contact Information

AgencyCalifornia → Caltrans, District 10 - Stockton

Contacts1 person available

OfficeN/A

Organization / Agency

California → Caltrans, District 10 - Stockton

Office AddressN/A

Contacts

Jonathan ColeyBranch Chief

contact@example.gov

+1 (555) 000-0000

Full Description

Caltrans, in cooperation with the City, proposes to enhance local and regional traffic circulation and reduce existing and future congestion at the Interstate 580/Corral Hollow Road interchange resulting from buildout of the Tracy Hills Specific Plan. The current Interstate 580/Corral Hollow Road Interchange is a Tight Diamond configuration with single-lane on- and off-ramps. A two-way stop sign controls the intersections of Corral Hollow Road and the ramp entrances/exits. The project proposes reconfiguring the existing Tight Diamond with a Diverging Diamond interchange. The proposed project includes the following improvements: Widen and upgrade the Corral Hollow Road Overpass structure (Bridge Number 29-0080) to match the existing four lanes along Corral Hollow Road on either side of the interchange and construct a new concrete barrier between the vehicle lanes and a new center-running multi-purpose bike/pedestrian path. Reconfigure the eastbound and westbound Interstate 580 ramp intersections with Corral Hollow Road to a Diverging Diamond configuration and install a new two-phase signal. Install new traffic signals at the eastbound and westbound ramp intersections at Corral Hollow Road. Stripe crosswalks on the north leg of the westbound Interstate 580 ramp intersection and the south leg of the eastbound Interstate 580 ramp intersection. The eastbound on-ramp crosses Corral Hollow Creek. Two design options are being considered to address the crossing: Design Option A would involve widening the existing bridge over the Corral Hollow Creek (Bridge Number 29-0081L) to accommodate the eastbound on-ramp, including an additional lane and paved shoulder. Design Option B would involve complete replacement of the existing Corral Hollow Creek Bridge. The California Department of Transportation (Caltrans) proposes to conduct multimodal improvements for the Interstate 580/Corral Hollow Interchange between post mile 7.6 and post mile 8.6 in San Joaquin County