US Bridges

U.S. Highway 101 over SR 169 & Hoppow Creek

Fair

Del Norte County, California · 01-DN-101-R4.64 · Structure no. 01 0026

Built
1965
60 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
169 ft
2 main spans
Daily traffic
3,600
2009 count
Owner
State
State Highway Agency

About this bridge

U.S. Highway 101 over SR 169 & Hoppow Creek is a concrete continuous box beam or girders - multiple carrying U.S. Highway 101 over SR 169 & Hoppow Creek in Del Norte County, California. It was built in 1965, so it is 60 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 6 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 3,600 vehicles a day, roughly 18% of them trucks, projected to reach 4,460 by 2043. The structure is 169 ft (51.5 m) long and 43 ft wide.

CarriesU.S. Highway 101
CrossesSR 169 & Hoppow Creek
Location01-DN-101-R4.64
RouteU.S. Route 101
Coordinates41.52304, -124.03407
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating38.3 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length169 ft (51.5 m)
Longest span84 ft (25.6 m)
Deck width43 ft (13 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2009)
Projected traffic4,460 by 2043
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed—
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 SR 169 & Hoppow Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is U.S. Highway 101 over SR 169 & Hoppow 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 SR 169 & Hoppow Creek carry?

About 3,600 vehicles per day (2009 count), of which roughly 18% are trucks.

How long is U.S. Highway 101 over SR 169 & Hoppow Creek?

The structure is 169 ft (51.5 m) long with a longest span of 84 ft (25.6 m) and a deck 43 ft wide.

Who owns U.S. Highway 101 over SR 169 & Hoppow Creek?

It is owned by the State Highway Agency.