US Bridges

Capell Cross RD over Capell Creek

Fair

Napa County, California · 0.1 MI W/O SR 128 · Structure no. 21C0101

Built
1955
70 years old
Condition
Fair
inspected May 2024
Type
Arch - Deck
Steel
Length
31 ft
1 main span
Daily traffic
100
2012 count
Owner
County
County Highway Agency

About this bridge

Capell Cross RD over Capell Creek is a steel arch - deck carrying Capell Cross RD over Capell Creek in Napa County, California. It was built in 1955, so it is 70 years old, older 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 326 by 2046. The structure is 31 ft (9.4 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCapell Cross RD
CrossesCapell Creek
Location0.1 MI W/O SR 128
RouteCounty Highway 0
CountyNapa County
StateCalifornia
Coordinates38.47116, -122.2283
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
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2012)
Projected traffic326 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Capell Cross RD over Capell Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is Capell Cross RD over Capell Creek 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 2024.

How much traffic does Capell Cross RD over Capell Creek carry?

About 100 vehicles per day (2012 count), of which roughly 10% are trucks.

How long is Capell Cross RD over Capell Creek?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns Capell Cross RD over Capell Creek?

It is owned by the County Highway Agency.