Main Prairie RD over Ulatis Creek
PoorClosed to trafficSolano County, California · 0.3 MI E of RTE 113 · Structure no. 23C0118
- Built
- 1962
- 63 years old
- Condition
- Poor
- inspected March 2023
- Type
- Slab
- Concrete Continuous
- Length
- 130 ft
- 4 main spans
- Daily traffic
- 255
- 2003 count
- Owner
- County
- County Highway Agency
About this bridge
Main Prairie RD over Ulatis Creek is a concrete continuous slab carrying Main Prairie RD over Ulatis Creek in Solano County, California. It was built in 1962, so it is 63 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 1 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.
It carries about 255 vehicles a day, roughly 5% of them trucks, projected to reach 114 by 2041. The structure is 130 ft (39.6 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 1 Imminent Failure | Major deterioration or section loss present in critical structural components. Bridge is closed to traffic but corrective action may put it back in light service. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Main Prairie RD over Ulatis Creek built?
It was built in 1962, making it 63 years old in 2025.
What condition is Main Prairie RD over Ulatis Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.
How much traffic does Main Prairie RD over Ulatis Creek carry?
About 255 vehicles per day (2003 count), of which roughly 5% are trucks.
How long is Main Prairie RD over Ulatis Creek?
The structure is 130 ft (39.6 m) long with a longest span of 32 ft (9.8 m) and a deck 27 ft wide.
Who owns Main Prairie RD over Ulatis Creek?
It is owned by the County Highway Agency.