US Bridges

Watt DR over Jameson Canyon CR

Fair

Solano County, California · North of Red Top RD · Structure no. 23C0275

Built
1983
42 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
39 ft
2 main spans
Daily traffic
250
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

Watt DR over Jameson Canyon CR is a concrete continuous culvert carrying Watt DR over Jameson Canyon CR in Solano County, California. It was built in 1983, so it is 42 years old, younger 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 6 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 250 vehicles a day, roughly 10% of them trucks, projected to reach 418 by 2045. The structure is 39 ft (12 m) long and 56 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesWatt DR
CrossesJameson Canyon CR
LocationNorth of Red Top RD
RouteCity Street 0
CountySolano County
StateCalifornia
Coordinates38.2042, -122.14705
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection9 ExcellentNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length39 ft (12 m)
Longest span13 ft (4 m)
Deck width56 ft (17 m)
Roadway width48 ft (14.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2011)
Projected traffic418 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Watt DR over Jameson Canyon CR built?

It was built in 1983, making it 42 years old in 2025.

What condition is Watt DR over Jameson Canyon CR 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 December 2023.

How much traffic does Watt DR over Jameson Canyon CR carry?

About 250 vehicles per day (2011 count), of which roughly 10% are trucks.

How long is Watt DR over Jameson Canyon CR?

The structure is 39 ft (12 m) long with a longest span of 13 ft (4 m) and a deck 56 ft wide.

Who owns Watt DR over Jameson Canyon CR?

It is owned by the City or Municipal Highway Agency.