US Bridges

Vadney Avenue over Hoag Slough

Good

Tehama County, California · 1.6 KM S/O South Ave · Structure no. 08C0356

Built
1996
29 years old
Condition
Good
inspected December 2023
Type
Girder and Floorbeam System
Steel
Length
28 ft
1 main span
Daily traffic
141
2009 count
Owner
County
County Highway Agency

About this bridge

Vadney Avenue over Hoag Slough is a steel girder and floorbeam system carrying Vadney Avenue over Hoag Slough in Tehama County, California. It was built in 1996, so it is 29 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 141 vehicles a day, roughly 4% of them trucks, projected to reach 194 by 2043. The structure is 28 ft (8.5 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesVadney Avenue
CrossesHoag Slough
Location1.6 KM S/O South Ave
RouteCounty Highway 0
Coordinates39.91117, -122.04264
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 protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.5 US tons
Inventory rating17.2 US tons

Structure

MaterialSteel
DeckClosed grating
Main spans1
Design loadHS 20 + Mod
Structure length28 ft (8.5 m)
Longest span25 ft (7.6 m)
Deck width30 ft (9 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic141 (2009)
Projected traffic194 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Vadney Avenue over Hoag Slough built?

It was built in 1996, making it 29 years old in 2025.

What condition is Vadney Avenue over Hoag Slough 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 December 2023.

How much traffic does Vadney Avenue over Hoag Slough carry?

About 141 vehicles per day (2009 count), of which roughly 4% are trucks.

How long is Vadney Avenue over Hoag Slough?

The structure is 28 ft (8.5 m) long with a longest span of 25 ft (7.6 m) and a deck 30 ft wide.

Who owns Vadney Avenue over Hoag Slough?

It is owned by the County Highway Agency.