US Bridges

Villa Lane over Silverado Creek

Good

Napa County, California · 0.35 MI N/O Trancas Str · Structure no. 21C0125

Built
1999
26 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
1 main span
Daily traffic
576
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

Villa Lane over Silverado Creek is a steel stringer/multi-beam or girder carrying Villa Lane over Silverado Creek in Napa County, California. It was built in 1999, so it is 26 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 576 vehicles a day, roughly 2% of them trucks, projected to reach 1,012 by 2042. The structure is 62 ft (19 m) long and 48 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesVilla Lane
CrossesSilverado Creek
Location0.35 MI N/O Trancas Str
RouteCity Street 0
Coordinates38.32866, -122.29642
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 protection8 Very GoodNo problems noted.
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.8 US tons
Inventory rating42.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length62 ft (19 m)
Longest span59 ft (17.9 m)
Deck width48 ft (14.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic576 (2011)
Projected traffic1,012 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Villa Lane over Silverado Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Villa Lane over Silverado 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 Villa Lane over Silverado Creek carry?

About 576 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Villa Lane over Silverado Creek?

The structure is 62 ft (19 m) long with a longest span of 59 ft (17.9 m) and a deck 48 ft wide.

Who owns Villa Lane over Silverado Creek?

It is owned by the City or Municipal Highway Agency.