US Bridges

Broadway over American Canyon Creek

Good

Napa County, California · S/O American Cyn RD · Structure no. 21C0045

Built
1973
52 years old, rebuilt 2007
Condition
Good
inspected May 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,500
2012 count
Owner
City
City or Municipal Highway Agency

About this bridge

Broadway over American Canyon Creek is a concrete continuous culvert carrying Broadway over American Canyon Creek in Napa County, California. It was built in 1973 and reconstructed in 2007, so it is 52 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 1,500 vehicles a day, roughly 10% of them trucks, projected to reach 2,453 by 2042. The structure is 22 ft (6.7 m) long and 55 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBroadway
CrossesAmerican Canyon Creek
LocationS/O American Cyn RD
RouteCounty Highway 0
Coordinates38.16336, -122.25189
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3.2 m)
Deck width55 ft (16.7 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2012)
Projected traffic2,453 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Broadway over American Canyon Creek built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2007.

What condition is Broadway over American Canyon 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 Broadway over American Canyon Creek carry?

About 1,500 vehicles per day (2012 count), of which roughly 10% are trucks.

How long is Broadway over American Canyon Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3.2 m) and a deck 55 ft wide.

Who owns Broadway over American Canyon Creek?

It is owned by the City or Municipal Highway Agency.