US Bridges

Yountville Cross R over Napa River

Fair

Napa County, California · 0.9 MI SW Silverado Trail · Structure no. 21C0116

Built
1985
40 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
575 ft
6 main spans
Daily traffic
2,580
2005 count
Owner
County
County Highway Agency

About this bridge

Yountville Cross R over Napa River is a prestressed concrete continuous stringer/multi-beam or girder carrying Yountville Cross R over Napa River in Napa County, California. It was built in 1985, so it is 40 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 5 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 2,580 vehicles a day, roughly 10% of them trucks, projected to reach 3,935 by 2040. The structure is 575 ft (175.3 m) long and 39 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesYountville Cross R
CrossesNapa River
Location0.9 MI SW Silverado Trail
RouteCounty Highway 0
CountyNapa County
StateCalifornia
Coordinates38.41812, -122.35188
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length575 ft (175.3 m)
Longest span96 ft (29.3 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,580 (2005)
Projected traffic3,935 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-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 Yountville Cross R over Napa River built?

It was built in 1985, making it 40 years old in 2025.

What condition is Yountville Cross R over Napa River 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 May 2023.

How much traffic does Yountville Cross R over Napa River carry?

About 2,580 vehicles per day (2005 count), of which roughly 10% are trucks.

How long is Yountville Cross R over Napa River?

The structure is 575 ft (175.3 m) long with a longest span of 96 ft (29.3 m) and a deck 39 ft wide.

Who owns Yountville Cross R over Napa River?

It is owned by the County Highway Agency.