Marsh Drive Bridge Replacement Project

Public Works Department logo with text

PROJECT OVERVIEW

Marsh Drive Bridge project mapThe Marsh Drive Bridge over the Walnut Creek Channel will be replaced by the Contra Costa County Public Works Department (CCCPWD) in collaboration with the California Department of Transportation (Caltrans) and the City of Concord. The existing bridge is structurally, seismically, and hydraulically inadequate. The project’s goal is to replace the existing bridge with a new one that meets current design standards and allows for safe public access. Construction on the project is expected to begin in June 2021, and it will take between 18 and 22 months to complete. The existing bridge was built in 1938 as a 6-span concrete slab bridge and was lengthened to a 10-span bridge in the 1960s.

To meet hydraulic standards, the bridge will be raised approximately seven feet with fewer supports in the channel. To improve safety, the proposed bridge will re-align Marsh Drive slightly to the north while utilizing a larger horizontal curve on the east. At each end of the bridge, approximately 350 to 500 linear feet of roadway approach work will be completed to improve the roadway alignment and horizontal curve. The proposed bridge will have two lanes of vehicular traffic (one in each direction) and a 10-foot wide separated bike and pedestrian facility on the south side of the bridge in its final configuration.

  1. 1
  2. 2
  3. 3
  4. 4

To receive updates on this project visit the Notification Center or click on the "sign up for updates" button below.  Choose to receive the notifications by text or email then follow the prompts to complete subscription.

MDB Sign Up Button

PROJECT SCHEDULE

Marsh Drive Bridge project scheduleStage 1 of the bridge’s foundation and grading began late in the second quarter of 2021.  Stage 1 is expected to be finished by the fourth quarter of 2021.  Stage 2, the final construction stage, will begin in the second quarter of 2022 and will be completed by the end of the third quarter of 2022.  The project is expected to be completed in the fourth quarter of 2022.

WEEKLY CONSTRUCTION REPORTS WEEK 61-90

  1. Marsh Drive Bridge Report Week 90 (PDF)
  2. Marsh Drive Bridge Report Week 89 (PDF)
  3. Marsh Drive Bridge Report Week 87 (PDF)
  4. Marsh Drive Bridge Report Week 86 (PDF)
  5. Marsh Drive Bridge Report Week 85 (PDF)
  6. Marsh Drive Bridge Report Week 84 (PDF)
  7. Marsh Drive Bridge Report Week 83 (PDF)
  8. Marsh Drive Bridge Report Week 82 (PDF)
  9. Marsh Drive Bridge Report Week 81 (PDF)
  10. Marsh Drive Bridge Report Week 80 (PDF)
  11. Marsh Drive Bridge Report Week 79 (PDF)
  12. Marsh Drive Bridge Report Week 78 (PDF)
  13. Marsh Drive Bridge Report Week 75 (PDF)
  14. Marsh Drive Bridge Report Week 74 (PDF)
  1. Marsh Drive Bridge Report Week 73 (PDF)
  2. Marsh Drive Bridge Report Week 72 (PDF)
  3. Marsh Drive Bridge Report Week 71 (PDF)
  4. Marsh Drive Bridge Report Week 70 (PDF)
  5. Marsh Drive Bridge Report Week 69 (PDF)
  6. Marsh Drive Bridge Report Week 68 (PDF)
  7. Marsh Drive Bridge Report Week 67 (PDF)
  8. Marsh Drive Bridge Report Week 66 (PDF)
  9. Marsh Drive Bridge Report Week 65 (PDF)
  10. Marsh Drive Bridge Report Week 64 (PDF)
  11. Marsh Drive Bridge Report Week 63 (PDF)
  12. Marsh Drive Bridge Report Week 62 (PDF)
  13. Marsh Drive Bridge Report Week 61 (PDF)

WEEKLY CONSTRUCTION REPORTS WEEK 31-60

  1. Marsh Drive Bridge Report Week 60 (PDF)
  2. Marsh Drive Bridge Report Week 59 (PDF)
  3. Marsh Drive Bridge Report Week 58 (PDF)
  4. Marsh Drive Bridge Report Week 57 (PDF)
  5. Marsh Drive Bridge Report Week 56 (PDF)
  6. Marsh Drive Bridge Report Week 55 (PDF)
  7. Marsh Drive Bridge Report Week 54 (PDF)
  8. Marsh Drive Bridge Report Week 53 (PDF)
  9. Marsh Drive Bridge Report Week 52 (PDF)
  10. Marsh Drive Bridge Report Week 51 (PDF)
  11. Marsh Drive Bridge Report Week 50 (PDF)
  12. Marsh Drive Bridge Report Week 49 (PDF)
  13. Marsh Drive Bridge Report Week 48 (PDF)
  14. Marsh Drive Bridge Report Week 47 (PDF)
  1. Marsh Drive Bridge Report Week 46 (PDF)
  2. Marsh Drive Bridge Report Week 45 (PDF)
  3. Marsh Drive Bridge Report Week 44 (PDF)
  4. Marsh Drive Bridge Report Week 43 (PDF)
  5. Marsh Drive Bridge Report Week 42 (PDF)
  6. Marsh Drive Bridge Report Week 41 (PDF)
  7. Marsh Drive Bridge Report Week 40 (PDF)
  8. Marsh Drive Bridge Report Week 39 (PDF)
  9. Marsh Drive Bridge Report Week 38 (PDF)
  10. Marsh Drive Bridge Report Week 37 (PDF)
  11. Marsh Drive Bridge Report Week 36 (PDF)
  12. Marsh Drive Bridge Report Week 35 (PDF)
  13. Marsh Drive Bridge Report Week 32 (PDF)
  14. Marsh Drive Bridge Report Week 31 (PDF)

WEEKLY CONSTRUCTION REPORTS WEEK 1-30

  1. Marsh Drive Bridge Report Week 30 (PDF)
  2. Marsh Drive Bridge Report Week 29 (PDF)
  3. Marsh Drive Bridge Report Week 28 (PDF)
  4. Marsh Drive Bridge Report Week 27 (PDF)
  5. Marsh Drive Bridge Report Week 26 (PDF)
  6. Marsh Drive Bridge Report Week 25 (PDF)
  7. Marsh Drive Bridge Report Week 24 (PDF)
  8. Marsh Drive Bridge Report Week 23 (PDF)
  9. Marsh Drive Bridge Report Week 22 (PDF)
  10. Marsh Drive Bridge Report Week 21 (PDF)
  11. Marsh Drive Bridge Report Week 20 (PDF)
  12. Marsh Drive Bridge Report Week 19 (PDF)
  13. Marsh Drive Bridge Report Week 18 (PDF)
  14. Marsh Drive Bridge Report Week 17 (PDF)
  15. Marsh Drive Bridge Report Week 16 (PDF)
  1. Marsh Drive Bridge Report Week 15 (PDF)
  2. Marsh Drive Bridge Report Week 14 (PDF)
  3. Marsh Drive Bridge Report Week 13 (PDF)
  4. Marsh Drive Bridge Report Week 12 (PDF)
  5. Marsh Road Bridge Report Week 11 (PDF)
  6. Marsh Drive Bridge Report Week 10 (PDF)
  7. Marsh Drive Bridge Report Week 9 (PDF)
  8. Marsh Road Bridge Report Week 8 (PDF)
  9. Marsh Drive Bridge Report Week 7 (PDF)
  10. Marsh Drive Bridge Report Week 6 (PDF)
  11. Marsh Drive Bridge Report Week 5 (PDF)
  12. Marsh Drive Bridge Report Week 4 (PDF)
  13. Marsh Drive Bridge Report Week 3(PDF)
  14. Marsh Drive Bridge Report Week 2 (PDF)
  15. Marsh Drive Bridge Report Week 1 (PDF)

QUESTIONS & COMMENTS

For questions about the Marsh Drive Bridge Replacement Project, email the project team or call at 1-800-684-2279.