US Bridges

State Route 36 over Little Larabee Creek

Good

Humboldt County, California · 01-HUM-036-25.27 · Structure no. 04 0102

Built
1960
65 years old
Condition
Good
inspected June 2022
Type
Tee Beam
Concrete Continuous
Length
180 ft
4 main spans
Daily traffic
1,200
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 36 over Little Larabee Creek is a concrete continuous tee beam carrying State Route 36 over Little Larabee Creek in Humboldt County, California. It was built in 1960, so it is 65 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 1,200 vehicles a day, projected to reach 2,328 by 2044. The structure is 180 ft (54.9 m) long and 31 ft wide. If it were closed, the detour would be 93.8 mi (151 km).

Location

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CarriesState Route 36
CrossesLittle Larabee Creek
Location01-HUM-036-25.27
RouteState Highway 36
CountyHumboldt County
StateCalifornia
Coordinates40.47803, -123.78114
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: 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 rating46.4 US tons
Inventory rating35.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length180 ft (54.9 m)
Longest span50 ft (15.2 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2009)
Projected traffic2,328 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed93.8 mi (151 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 36 over Little Larabee Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is State Route 36 over Little Larabee 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 June 2022.

How much traffic does State Route 36 over Little Larabee Creek carry?

About 1,200 vehicles per day (2009 count).

How long is State Route 36 over Little Larabee Creek?

The structure is 180 ft (54.9 m) long with a longest span of 50 ft (15.2 m) and a deck 31 ft wide.

Who owns State Route 36 over Little Larabee Creek?

It is owned by the State Highway Agency.