US Bridges

Howe Creek Road over Howe Creek

Good

Humboldt County, California · 1.0 MI S/O Blue Slide RD · Structure no. 04C0133

Built
1980
45 years old
Condition
Good
inspected August 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
95 ft
1 main span
Daily traffic
68
2015 count
Owner
County
County Highway Agency

About this bridge

Howe Creek Road over Howe Creek is a prestressed concrete box beam or girders - multiple carrying Howe Creek Road over Howe Creek in Humboldt County, California. It was built in 1980, so it is 45 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 68 vehicles a day, roughly 5% of them trucks, projected to reach 200 by 2042. The structure is 95 ft (28.9 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHowe Creek Road
CrossesHowe Creek
Location1.0 MI S/O Blue Slide RD
RouteCounty Highway 0
Coordinates40.50088, -124.16866
Functional classRural Local

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating60.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length95 ft (28.9 m)
Longest span93 ft (28.2 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68 (2015)
Projected traffic200 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Howe Creek Road over Howe Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Howe Creek Road over Howe Creek 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 2022.

How much traffic does Howe Creek Road over Howe Creek carry?

About 68 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Howe Creek Road over Howe Creek?

The structure is 95 ft (28.9 m) long with a longest span of 93 ft (28.2 m) and a deck 25 ft wide.

Who owns Howe Creek Road over Howe Creek?

It is owned by the County Highway Agency.