US Bridges

Wild Oak Drive over Oakmont Creek

Good

Sonoma County, California · SW of Oakmont Drive · Structure no. 20C0559

Built
1963
62 years old
Condition
Good
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
2,000
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Wild Oak Drive over Oakmont Creek is a prestressed concrete tee beam carrying Wild Oak Drive over Oakmont Creek in Sonoma County, California. It was built in 1963, so it is 62 years old, older 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 2,000 vehicles a day, roughly 3% of them trucks, projected to reach 3,000 by 2044. The structure is 28 ft (8.6 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesWild Oak Drive
CrossesOakmont Creek
LocationSW of Oakmont Drive
RouteCity Street 0
Coordinates38.43774, -122.5995
Functional classUrban 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 inspectionJune 2024
Inspection intervalevery 48 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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.6 m)
Longest span27 ft (8.3 m)
Deck width44 ft (13.4 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2019)
Projected traffic3,000 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Wild Oak Drive over Oakmont Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Wild Oak Drive over Oakmont 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 June 2024.

How much traffic does Wild Oak Drive over Oakmont Creek carry?

About 2,000 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Wild Oak Drive over Oakmont Creek?

The structure is 28 ft (8.6 m) long with a longest span of 27 ft (8.3 m) and a deck 44 ft wide.

Who owns Wild Oak Drive over Oakmont Creek?

It is owned by the City or Municipal Highway Agency.