US Bridges

U.S. Highway 101 over Bear Creek

Fair

Humboldt County, California · 01-HUM-101-R42.99 · Structure no. 04 0199

Built
1967
58 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
206 ft
3 main spans
Daily traffic
6,000
2009 count
Owner
State
State Highway Agency

About this bridge

U.S. Highway 101 over Bear Creek is a concrete continuous box beam or girders - multiple carrying U.S. Highway 101 over Bear Creek in Humboldt County, California. It was built in 1967, so it is 58 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 6,000 vehicles a day, roughly 17% of them trucks, projected to reach 8,364 by 2041. The structure is 206 ft (62.8 m) long and 63 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesU.S. Highway 101
CrossesBear Creek
Location01-HUM-101-R42.99
RouteU.S. Route 101
Coordinates40.431, -123.98487
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating33.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length206 ft (62.8 m)
Longest span75 ft (22.9 m)
Deck width63 ft (19.1 m)
Roadway width61 ft (18.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2009)
Projected traffic8,364 by 2041
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 U.S. Highway 101 over Bear Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is U.S. Highway 101 over Bear 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 August 2023.

How much traffic does U.S. Highway 101 over Bear Creek carry?

About 6,000 vehicles per day (2009 count), of which roughly 17% are trucks.

How long is U.S. Highway 101 over Bear Creek?

The structure is 206 ft (62.8 m) long with a longest span of 75 ft (22.9 m) and a deck 63 ft wide.

Who owns U.S. Highway 101 over Bear Creek?

It is owned by the State Highway Agency.