US Bridges

Davis ST over US Highway 101

Good

Humboldt County, California · 01-HUM-101-R52.60-RDEL · Structure no. 04 0237

Built
1976
49 years old
Condition
Good
inspected July 2021
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
177 ft
2 main spans
Daily traffic
1,234
1998 count
Owner
State
State Highway Agency

About this bridge

Davis ST over US Highway 101 is a concrete continuous box beam or girders - multiple carrying Davis ST over US Highway 101 in Humboldt County, California. It was built in 1976, so it is 49 years old, younger 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 1,234 vehicles a day, roughly 10% of them trucks, projected to reach 1,128 by 2043. The structure is 177 ft (53.9 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesDavis ST
CrossesUS Highway 101
Location01-HUM-101-R52.60-RDEL
RouteCity Street 0
Coordinates40.49915, -124.09947
Functional classUrban 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.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating46.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length177 ft (53.9 m)
Longest span88 ft (26.8 m)
Deck width47 ft (14.3 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,234 (1998)
Projected traffic1,128 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Davis ST over US Highway 101 built?

It was built in 1976, making it 49 years old in 2025.

What condition is Davis ST over US Highway 101 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 July 2021.

How much traffic does Davis ST over US Highway 101 carry?

About 1,234 vehicles per day (1998 count), of which roughly 10% are trucks.

How long is Davis ST over US Highway 101?

The structure is 177 ft (53.9 m) long with a longest span of 88 ft (26.8 m) and a deck 47 ft wide.

Who owns Davis ST over US Highway 101?

It is owned by the State Highway Agency.