US Bridges

Freshwater Road over Salt Creek

Fair

Colusa County, California · 0.1 MI E of I-5 · Structure no. 15C0041

Built
1968
57 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
82 ft
3 main spans
Daily traffic
829
2014 count
Owner
County
County Highway Agency

About this bridge

Freshwater Road over Salt Creek is a concrete continuous slab carrying Freshwater Road over Salt Creek in Colusa 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 fair condition with a lowest component rating of 6 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 829 vehicles a day, roughly 10% of them trucks, projected to reach 1,068 by 2046. The structure is 82 ft (25.1 m) long and 32 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesFreshwater Road
CrossesSalt Creek
Location0.1 MI E of I-5
RouteCounty Highway 0
Coordinates39.17422, -122.1519
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating67.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length82 ft (25.1 m)
Longest span32 ft (9.8 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic829 (2014)
Projected traffic1,068 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Freshwater Road over Salt Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is Freshwater Road over Salt 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 October 2024.

How much traffic does Freshwater Road over Salt Creek carry?

About 829 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is Freshwater Road over Salt Creek?

The structure is 82 ft (25.1 m) long with a longest span of 32 ft (9.8 m) and a deck 32 ft wide.

Who owns Freshwater Road over Salt Creek?

It is owned by the County Highway Agency.