US Bridges

Partrick Road over Browns Valley Creek

GoodPosted for load

Napa County, California · Napa · Structure no. 21C0136

Built
2014
11 years old
Condition
Good
inspected May 2023
Type
Truss - Deck
Steel
Length
41 ft
1 main span
Daily traffic
300
2016 count
Owner
County
County Highway Agency

About this bridge

Partrick Road over Browns Valley Creek is a steel truss - deck carrying Partrick Road over Browns Valley Creek in Napa County, California. It was built in 2014, so it is 11 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. Its operating status is: posted for load restriction.

It carries about 300 vehicles a day, roughly 1% of them trucks, projected to reach 400 by 2040. The structure is 41 ft (12.5 m) long and 14 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesPartrick Road
CrossesBrowns Valley Creek
LocationNapa
RouteCounty Highway 0
Coordinates38.31359, -122.36374
Functional classRural 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating27.9 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span40 ft (12.2 m)
Deck width14 ft (4.3 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2016)
Projected traffic400 by 2040
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
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 Partrick Road over Browns Valley Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is Partrick Road over Browns Valley 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 2023.

How much traffic does Partrick Road over Browns Valley Creek carry?

About 300 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is Partrick Road over Browns Valley Creek?

The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m) and a deck 14 ft wide.

Who owns Partrick Road over Browns Valley Creek?

It is owned by the County Highway Agency.