US Bridges

Oregon Mountain RD over Elk Creek

Fair

Del Norte County, California · 0.1 Mile Ne/O RTE 199 · Structure no. 01C0018

Built
1925
100 years old, rebuilt 1952
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
31 ft
1 main span
Daily traffic
40
1998 count
Owner
County
County Highway Agency

About this bridge

Oregon Mountain RD over Elk Creek is a concrete tee beam carrying Oregon Mountain RD over Elk Creek in Del Norte County, California. It was built in 1925 and reconstructed in 1952, so it is 100 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 5 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 40 vehicles a day, projected to reach 54 by 2041. The structure is 31 ft (9.4 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesOregon Mountain RD
CrossesElk Creek
Location0.1 Mile Ne/O RTE 199
RouteCounty Highway 0
CountyDel Norte County
StateCalifornia
Coordinates41.97912, -123.72007
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.1 US tons
Inventory rating36.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span29 ft (8.8 m)
Deck width34 ft (10.5 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (1998)
Projected traffic54 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Oregon Mountain RD over Elk Creek built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1952.

What condition is Oregon Mountain RD over Elk 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 June 2023.

How much traffic does Oregon Mountain RD over Elk Creek carry?

About 40 vehicles per day (1998 count).

How long is Oregon Mountain RD over Elk Creek?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 34 ft wide.

Who owns Oregon Mountain RD over Elk Creek?

It is owned by the County Highway Agency.