Sweetwtr Sprngs RD over Porter Creek
PoorSonoma County, California · 3.5 MI W of Westside RD · Structure no. 20C0368
- Built
- 1968
- 57 years old
- Condition
- Poor
- inspected July 2024
- Type
- Slab
- Concrete Continuous
- Length
- 39 ft
- 2 main spans
- Daily traffic
- 140
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Sweetwtr Sprngs RD over Porter Creek is a concrete continuous slab carrying Sweetwtr Sprngs RD over Porter Creek in Sonoma County, California. It was built in 1968, so it is 57 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 2 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: open, posting recommended but not legally implemented.
It carries about 140 vehicles a day, roughly 1% of them trucks, projected to reach 109 by 2045. The structure is 39 ft (11.9 m) long and 14 ft wide. If it were closed, the detour would be 21.1 mi (34 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| 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 Sweetwtr Sprngs RD over Porter Creek built?
It was built in 1968, making it 57 years old in 2025.
What condition is Sweetwtr Sprngs RD over Porter 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 July 2024.
How much traffic does Sweetwtr Sprngs RD over Porter Creek carry?
About 140 vehicles per day (2015 count), of which roughly 1% are trucks.
How long is Sweetwtr Sprngs RD over Porter Creek?
The structure is 39 ft (11.9 m) long with a longest span of 18 ft (5.6 m) and a deck 14 ft wide.
Who owns Sweetwtr Sprngs RD over Porter Creek?
It is owned by the County Highway Agency.