US Bridges

Stwrt Pt-Skgg Sprg over Wolf Creek Culvert East

Good

Sonoma County, California · 2.3 MI E/O House Creek · Structure no. 20C0148

Built
1978
47 years old
Condition
Good
inspected July 2023
Type
Arch - Deck
Steel
Length
26 ft
1 main span
Daily traffic
300
2015 count
Owner
County
County Highway Agency

About this bridge

Stwrt Pt-Skgg Sprg over Wolf Creek Culvert East is a steel arch - deck carrying Stwrt Pt-Skgg Sprg over Wolf Creek Culvert East in Sonoma County, California. It was built in 1978, so it is 47 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 300 vehicles a day, roughly 2% of them trucks, projected to reach 137 by 2040. The structure is 26 ft (7.8 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesStwrt Pt-Skgg Sprg
CrossesWolf Creek Culvert East
Location2.3 MI E/O House Creek
RouteCounty Highway 0
Coordinates38.67512, -123.20441
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
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length26 ft (7.8 m)
Longest span26 ft (7.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2015)
Projected traffic137 by 2040
Trucks2%
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 Stwrt Pt-Skgg Sprg over Wolf Creek Culvert East built?

It was built in 1978, making it 47 years old in 2025.

What condition is Stwrt Pt-Skgg Sprg over Wolf Creek Culvert East 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 Stwrt Pt-Skgg Sprg over Wolf Creek Culvert East carry?

About 300 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is Stwrt Pt-Skgg Sprg over Wolf Creek Culvert East?

The structure is 26 ft (7.8 m) long with a longest span of 26 ft (7.8 m).

Who owns Stwrt Pt-Skgg Sprg over Wolf Creek Culvert East?

It is owned by the County Highway Agency.