US Bridges

U.S. Highway 101 over Sorenson Road

Good

Humboldt County, California · 01-HUM-101-R39.67 · Structure no. 04 0198

Built
1967
58 years old
Condition
Good
inspected August 2023
Type
Tee Beam
Concrete Continuous
Length
110 ft
3 main spans
Daily traffic
6,190
2010 count
Owner
State
State Highway Agency

About this bridge

U.S. Highway 101 over Sorenson Road is a concrete continuous tee beam carrying U.S. Highway 101 over Sorenson Road 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 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 6,190 vehicles a day, roughly 17% of them trucks, projected to reach 8,364 by 2041. The structure is 110 ft (33.4 m) long and 62 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesU.S. Highway 101
CrossesSorenson Road
Location01-HUM-101-R39.67
RouteU.S. Route 101
Coordinates40.39755, -123.94769
Functional classRural Principal Arterial - Other

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.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length110 ft (33.4 m)
Longest span43 ft (13.1 m)
Deck width62 ft (18.9 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,190 (2010)
Projected traffic8,364 by 2041
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.7 mi (14 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was U.S. Highway 101 over Sorenson Road built?

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

What condition is U.S. Highway 101 over Sorenson Road 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 August 2023.

How much traffic does U.S. Highway 101 over Sorenson Road carry?

About 6,190 vehicles per day (2010 count), of which roughly 17% are trucks.

How long is U.S. Highway 101 over Sorenson Road?

The structure is 110 ft (33.4 m) long with a longest span of 43 ft (13.1 m) and a deck 62 ft wide.

Who owns U.S. Highway 101 over Sorenson Road?

It is owned by the State Highway Agency.