US Bridges

Oak Run RD over Little Cow Creek

Good

Shasta County, California · 1.1 MI S of S.R. 299 · Structure no. 06C0012

Built
1981
44 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
87 ft
1 main span
Daily traffic
220
2014 count
Owner
County
County Highway Agency

About this bridge

Oak Run RD over Little Cow Creek is a concrete box beam or girders - multiple carrying Oak Run RD over Little Cow Creek in Shasta County, California. It was built in 1981, so it is 44 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 220 vehicles a day, roughly 5% of them trucks, projected to reach 320 by 2041. The structure is 87 ft (26.4 m) long and 29 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesOak Run RD
CrossesLittle Cow Creek
Location1.1 MI S of S.R. 299
RouteCounty Highway 0
Coordinates40.74323, -122.01578
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating45.7 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length87 ft (26.4 m)
Longest span83 ft (25.4 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2014)
Projected traffic320 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 Oak Run RD over Little Cow Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Oak Run RD over Little Cow Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does Oak Run RD over Little Cow Creek carry?

About 220 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Oak Run RD over Little Cow Creek?

The structure is 87 ft (26.4 m) long with a longest span of 83 ft (25.4 m) and a deck 29 ft wide.

Who owns Oak Run RD over Little Cow Creek?

It is owned by the County Highway Agency.