Monument Blvd over Walnut Creek
FairContra Costa County, California · At Mohr Lane · Structure no. 28C0094
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected February 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 103 ft
- 1 main span
- Daily traffic
- 33,600
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Monument Blvd over Walnut Creek is a prestressed concrete stringer/multi-beam or girder carrying Monument Blvd over Walnut Creek in Contra Costa County, California. It was built in 1965, so it is 60 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 33,600 vehicles a day, roughly 5% of them trucks, projected to reach 54,835 by 2047. The structure is 103 ft (31.4 m) long and 76 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Monument Blvd over Walnut Creek built?
It was built in 1965, making it 60 years old in 2025.
What condition is Monument Blvd over Walnut Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2025.
How much traffic does Monument Blvd over Walnut Creek carry?
About 33,600 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is Monument Blvd over Walnut Creek?
The structure is 103 ft (31.4 m) long with a longest span of 101 ft (30.9 m) and a deck 76 ft wide.
Who owns Monument Blvd over Walnut Creek?
It is owned by the City or Municipal Highway Agency.