US Bridges

Inwood Road over South Fork Bear Creek

Good

Shasta County, California · 0.2 MI W of Ponderosa Way · Structure no. 06C0380

Built
2017
8 years old
Condition
Good
inspected September 2022
Type
Box Beam or Girders - Multiple
Concrete
Length
73 ft
1 main span
Daily traffic
90
2013 count
Owner
County
County Highway Agency

About this bridge

Inwood Road over South Fork Bear Creek is a concrete box beam or girders - multiple carrying Inwood Road over South Fork Bear Creek in Shasta County, California. It was built in 2017, so it is 8 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 90 vehicles a day, roughly 5% of them trucks, projected to reach 367 by 2040. The structure is 73 ft (22.3 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesInwood Road
CrossesSouth Fork Bear Creek
Location0.2 MI W of Ponderosa Way
RouteCounty Highway 0
Coordinates40.53194, -121.94417
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 protection9 ExcellentNo problems noted.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length73 ft (22.3 m)
Longest span71 ft (21.5 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2013)
Projected traffic367 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Inwood Road over South Fork Bear Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Inwood Road over South Fork Bear 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 September 2022.

How much traffic does Inwood Road over South Fork Bear Creek carry?

About 90 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is Inwood Road over South Fork Bear Creek?

The structure is 73 ft (22.3 m) long with a longest span of 71 ft (21.5 m) and a deck 24 ft wide.

Who owns Inwood Road over South Fork Bear Creek?

It is owned by the County Highway Agency.