US Bridges

Combie Road over Wooley Creek

Fair

Placer County, California · 0.4 M W Placer Hills RD · Structure no. 19C0158

Built
1930
95 years old, rebuilt 1970
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
9,104
2005 count
Owner
County
County Highway Agency

About this bridge

Combie Road over Wooley Creek is a steel stringer/multi-beam or girder carrying Combie Road over Wooley Creek in Placer County, California. It was built in 1930 and reconstructed in 1970, so it is 95 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 9,104 vehicles a day, roughly 5% of them trucks, projected to reach 6,607 by 2042. The structure is 24 ft (7.3 m) long and 40 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesCombie Road
CrossesWooley Creek
Location0.4 M W Placer Hills RD
RouteCounty Highway 0
CountyPlacer County
StateCalifornia
Coordinates39.00325, -121.02762
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating19.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width40 ft (12.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,104 (2005)
Projected traffic6,607 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 Combie Road over Wooley Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1970.

What condition is Combie Road over Wooley Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does Combie Road over Wooley Creek carry?

About 9,104 vehicles per day (2005 count), of which roughly 5% are trucks.

How long is Combie Road over Wooley Creek?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 40 ft wide.

Who owns Combie Road over Wooley Creek?

It is owned by the County Highway Agency.