US Bridges

Horse Creek Road over Middle Creek

Fair

Siskiyou County, California · 2.5 MI N of SR 96 · Structure no. 02C0128

Built
1971
54 years old
Condition
Fair
inspected July 2022
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
21
2011 count
Owner
County
County Highway Agency

About this bridge

Horse Creek Road over Middle Creek is a concrete continuous culvert carrying Horse Creek Road over Middle Creek in Siskiyou County, California. It was built in 1971, so it is 54 years old, younger 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 21 vehicles a day, roughly 5% of them trucks, projected to reach 34 by 2040. The structure is 32 ft (9.8 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHorse Creek Road
CrossesMiddle Creek
Location2.5 MI N of SR 96
RouteCounty Highway 0
Coordinates41.84385, -123.02759
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2011)
Projected traffic34 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Horse Creek Road over Middle Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Horse Creek Road over Middle 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 July 2022.

How much traffic does Horse Creek Road over Middle Creek carry?

About 21 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Horse Creek Road over Middle Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 22 ft wide.

Who owns Horse Creek Road over Middle Creek?

It is owned by the County Highway Agency.