US Bridges

Old River Road over Crawford Creek

Fair

Mendocino County, California · 13.3 MI N/W from US 101 · Structure no. 10C0094

Built
1948
77 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
27 ft
3 main spans
Daily traffic
777
2011 count
Owner
County
County Highway Agency

About this bridge

Old River Road over Crawford Creek is a concrete continuous slab carrying Old River Road over Crawford Creek in Mendocino County, California. It was built in 1948, so it is 77 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 777 vehicles a day, roughly 2% of them trucks, projected to reach 767 by 2042. The structure is 27 ft (8.3 m) long and 27 ft wide. If it were closed, the detour would be 29.2 mi (47 km).

CarriesOld River Road
CrossesCrawford Creek
Location13.3 MI N/W from US 101
RouteCounty Highway 0
Coordinates39.1071, -123.15866
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length27 ft (8.3 m)
Longest span16 ft (4.9 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic777 (2011)
Projected traffic767 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.2 mi (47 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Old River Road over Crawford Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is Old River Road over Crawford 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 2024.

How much traffic does Old River Road over Crawford Creek carry?

About 777 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Old River Road over Crawford Creek?

The structure is 27 ft (8.3 m) long with a longest span of 16 ft (4.9 m) and a deck 27 ft wide.

Who owns Old River Road over Crawford Creek?

It is owned by the County Highway Agency.