US Bridges

State Route 254 over Elk Creek

Good

Humboldt County, California · 01-HUM-254-10.43 · Structure no. 04 0008

Built
1940
85 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete Continuous
Length
120 ft
5 main spans
Daily traffic
565
2014 count
Owner
State
State Highway Agency

About this bridge

State Route 254 over Elk Creek is a concrete continuous slab carrying State Route 254 over Elk Creek in Humboldt County, California. It was built in 1940, so it is 85 years old, older 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 565 vehicles a day, roughly 6% of them trucks, projected to reach 1,457 by 2042. The structure is 120 ft (36.6 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesState Route 254
CrossesElk Creek
Location01-HUM-254-10.43
RouteState Highway 254
Coordinates40.27811, -123.85282
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 inspectionSeptember 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length120 ft (36.6 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic565 (2014)
Projected traffic1,457 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 254 over Elk Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is State Route 254 over Elk 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 September 2024.

How much traffic does State Route 254 over Elk Creek carry?

About 565 vehicles per day (2014 count), of which roughly 6% are trucks.

How long is State Route 254 over Elk Creek?

The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns State Route 254 over Elk Creek?

It is owned by the State Highway Agency.