US Bridges

County Road 215 over Howards Gulch

Fair

Modoc County, California · 2.15 MI N/O RTE 299 · Structure no. 03C0076

Built
1931
94 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
32
2012 count
Owner
County
County Highway Agency

About this bridge

County Road 215 over Howards Gulch is a concrete continuous culvert carrying County Road 215 over Howards Gulch in Modoc County, California. It was built in 1931, so it is 94 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 32 vehicles a day, projected to reach 35 by 2041. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesCounty Road 215
CrossesHowards Gulch
Location2.15 MI N/O RTE 299
RouteCounty Highway 0
CountyModoc County
StateCalifornia
Coordinates41.45938, -120.90763
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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32 (2012)
Projected traffic35 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 County Road 215 over Howards Gulch built?

It was built in 1931, making it 94 years old in 2025.

What condition is County Road 215 over Howards Gulch 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 August 2023.

How much traffic does County Road 215 over Howards Gulch carry?

About 32 vehicles per day (2012 count).

How long is County Road 215 over Howards Gulch?

The structure is 39 ft (11.9 m) long with a longest span of 11 ft (3.5 m).

Who owns County Road 215 over Howards Gulch?

It is owned by the County Highway Agency.