US Bridges

Loleta DR over US Highway 101

Good

Humboldt County, California · 01-HUM-101-65.95 · Structure no. 04 0165

Built
1962
63 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
161 ft
2 main spans
Daily traffic
800
1998 count
Owner
State
State Highway Agency

About this bridge

Loleta DR over US Highway 101 is a prestressed concrete stringer/multi-beam or girder carrying Loleta DR over US Highway 101 in Humboldt County, California. It was built in 1962, so it is 63 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 800 vehicles a day, roughly 7% of them trucks, projected to reach 1,091 by 2041. The structure is 161 ft (49.1 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLoleta DR
CrossesUS Highway 101
Location01-HUM-101-65.95
RouteCounty Highway 0
Coordinates40.64184, -124.20966
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.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 rating46.7 US tons
Inventory rating26.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length161 ft (49.1 m)
Longest span78 ft (23.8 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (1998)
Projected traffic1,091 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 Loleta DR over US Highway 101 built?

It was built in 1962, making it 63 years old in 2025.

What condition is Loleta DR 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 2023.

How much traffic does Loleta DR over US Highway 101 carry?

About 800 vehicles per day (1998 count), of which roughly 7% are trucks.

How long is Loleta DR over US Highway 101?

The structure is 161 ft (49.1 m) long with a longest span of 78 ft (23.8 m) and a deck 34 ft wide.

Who owns Loleta DR over US Highway 101?

It is owned by the State Highway Agency.