US Bridges

Lower Honcut Road over Wyman Ravine

Good

Butte County, California · 0.7 MI E of SH 70 · Structure no. 12C0289

Built
1977
48 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete Continuous
Length
82 ft
3 main spans
Daily traffic
807
2019 count
Owner
County
County Highway Agency

About this bridge

Lower Honcut Road over Wyman Ravine is a concrete continuous slab carrying Lower Honcut Road over Wyman Ravine in Butte County, California. It was built in 1977, so it is 48 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 807 vehicles a day, roughly 16% of them trucks, projected to reach 1,572 by 2041. The structure is 82 ft (25 m) long and 35 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesLower Honcut Road
CrossesWyman Ravine
Location0.7 MI E of SH 70
RouteCounty Highway 0
CountyButte County
StateCalifornia
Coordinates39.32095, -121.58262
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.7 US tons
Inventory rating57.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length82 ft (25 m)
Longest span32 ft (9.8 m)
Deck width35 ft (10.6 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic807 (2019)
Projected traffic1,572 by 2041
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Lower Honcut Road over Wyman Ravine built?

It was built in 1977, making it 48 years old in 2025.

What condition is Lower Honcut Road over Wyman Ravine 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 Lower Honcut Road over Wyman Ravine carry?

About 807 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is Lower Honcut Road over Wyman Ravine?

The structure is 82 ft (25 m) long with a longest span of 32 ft (9.8 m) and a deck 35 ft wide.

Who owns Lower Honcut Road over Wyman Ravine?

It is owned by the County Highway Agency.