Contra Costa Transportation Authority
26 public works projects registered with the California Department of Industrial Relations, 2012–2026 · Walnut Creek, Contra Costa County. Reported contract value: $3,277,022.
Projects by year
| Year | Projects | Reported contract value |
|---|---|---|
| 2026 | 2 | $2,233,611 |
| 2025 | 3 | $596,464 |
| 2023 | 1 | — |
| 2022 | 1 | — |
| 2021 | 1 | — |
| 2020 | 2 | — |
| 2018 | 3 | — |
| 2017 | 4 | — |
| 2016 | 3 | — |
| 2015 | 1 | — |
| 2014 | 1 | — |
| 2012 | 2 | — |
DIR has published contract amounts since July 2024; earlier years count projects only.
Types of work
- Other · 10
- Paving & streets · 6
- Traffic & signals · 4
- Bridges & structures · 3
- Parks, landscape & fields · 3
Inferred by Atriam from each project's name and description, not reported by the agency.
Contractors it awards most
| Prime contractor | Projects | Reported contract value |
|---|---|---|
| D C ELECTRIC GROUP INC | 2 | $651,818 |
| WSP USA INC. | 2 | $70,000 |
| REDGWICK CONSTRUCTION CO | 1 | $2,028,740 |
| DG STRIPING INC | 1 | $526,464 |
Latest projects
| Date | Project | Prime contractor | Contract amount |
|---|---|---|---|
| Sep 16, 2026 | Moraga Rd & Canyon Rd Complete StreetsPaving & streets | REDGWICK CONSTRUCTION CO | $2,028,740 |
| Jan 21, 2026 | Danville Traffic Signal ModsTraffic & signals | D C ELECTRIC GROUP INC | $204,871 |
| Oct 20, 2025 | I-680 CARM Ramp Metering (Design)Other | WSP USA INC. | $55,000 |
| Oct 6, 2025 | SR239 PA&EDParks, landscape & fields | WSP USA INC. | $15,000 |
| Sep 16, 2025 | Temporary Pavement Striping for TBOSPaving & streets | DG STRIPING INC | $526,464 |
| Mar 30, 2023 | IHT Bicycle and Pedestrian POCPaving & streets | — | — |
| Apr 20, 2022 | I680/SR4 Interchange Improvement PhasesOther | — | — |
| Oct 20, 2021 | SR4/Mokelumne Bike Pedestrian OvercrossiBridges & structures | — | — |
| Jun 1, 2020 | IHT Bicycle and Pedestrian POCPaving & streets | — | — |
| Jun 1, 2020 | IHT Bicycle and Pedestrian POCPaving & streets | — | — |
| Nov 13, 2018 | I-680/SR4 Interchange Improvements - PhaOther | — | — |
| Sep 15, 2018 | I680 SB HOV Completion and Express LanesOther | — | — |
| May 12, 2018 | I-680 Plant Establishment Period ContracOther | — | — |
| Nov 1, 2017 | I680 HOV and EL Tree CuttingParks, landscape & fields | — | — |
| Sep 11, 2017 | I80/Central Avenue Operational ImprovemtTraffic & signals | — | — |
| Jul 20, 2017 | I68/SR4 Interchange Modifications PhaseOther | — | — |
| Jan 31, 2017 | SR4/Balfor Road InterchangePaving & streets | — | — |
| Oct 26, 2016 | I80/Central Avenue Operational ImprovemtTraffic & signals | — | — |
| Sep 21, 2016 | I680 SB HOV Completion and Express LanesOther | — | — |
| Feb 13, 2016 | I80/San Pablo Dam Road Interchange - PhaBridges & structures | — | — |
| Mar 17, 2015 | I-680 Auxiliary Lanes, Segment 2, LandscParks, landscape & fields | — | — |
| Mar 25, 2014 | SR4/SR160 Ramp ConnectorsOther | — | — |
| Dec 31, 2012 | State Route 4 Widening Somersville RoadBridges & structures | — | — |
| Jun 6, 2012 | State Route 4 Bypass Sand Creek Rd InterOther | — | — |
| — | I-680/SR4 Interchange Improvements - PhaOther | — | — |
Source: California Department of Industrial Relations public works project registrations (PWC-100), updated daily by Atriam.