US Bridges

Wooden Vly Cros RD over Suisun Creek

Good

Napa County, California · 0.06 MI NE Wooden Valy RD · Structure no. 21C0102

Built
1930
95 years old
Condition
Good
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
83 ft
3 main spans
Daily traffic
100
2012 count
Owner
County
County Highway Agency

About this bridge

Wooden Vly Cros RD over Suisun Creek is a concrete continuous tee beam carrying Wooden Vly Cros RD over Suisun Creek in Napa County, California. It was built in 1930, 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 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 163 by 2046. The structure is 83 ft (25.3 m) long and 21 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesWooden Vly Cros RD
CrossesSuisun Creek
Location0.06 MI NE Wooden Valy RD
RouteCounty Highway 0
Coordinates38.32823, -122.13726
Functional classRural Minor Arterial

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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating27.4 US tons
Inventory rating17.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length83 ft (25.3 m)
Longest span30 ft (9.1 m)
Deck width21 ft (6.3 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2012)
Projected traffic163 by 2046
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Wooden Vly Cros RD over Suisun Creek built?

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

What condition is Wooden Vly Cros RD over Suisun 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 May 2024.

How much traffic does Wooden Vly Cros RD over Suisun Creek carry?

About 100 vehicles per day (2012 count), of which roughly 10% are trucks.

How long is Wooden Vly Cros RD over Suisun Creek?

The structure is 83 ft (25.3 m) long with a longest span of 30 ft (9.1 m) and a deck 21 ft wide.

Who owns Wooden Vly Cros RD over Suisun Creek?

It is owned by the County Highway Agency.