US Bridges

Pope ST over Napa River

Fair

Napa County, California · Silverado Trail · Structure no. 21C0109

Built
1894
131 years old
Condition
Fair
inspected August 2023
Type
Arch - Deck
Masonry
Length
177 ft
3 main spans
Daily traffic
2,790
2005 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pope ST over Napa River is a masonry arch - deck carrying Pope ST over Napa River in Napa County, California. It was built in 1894, so it is 131 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 2,790 vehicles a day, roughly 10% of them trucks, projected to reach 4,356 by 2041. The structure is 177 ft (53.9 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesPope ST
CrossesNapa River
LocationSilverado Trail
RouteCity Street 0
CountyNapa County
StateCalifornia
Coordinates38.51114, -122.45586
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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans3
Design loadUnknown
Structure length177 ft (53.9 m)
Longest span50 ft (15.2 m)
Deck width22 ft (6.6 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,790 (2005)
Projected traffic4,356 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pope ST over Napa River built?

It was built in 1894, making it 131 years old in 2025.

What condition is Pope ST 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 August 2023.

How much traffic does Pope ST over Napa River carry?

About 2,790 vehicles per day (2005 count), of which roughly 10% are trucks.

How long is Pope ST over Napa River?

The structure is 177 ft (53.9 m) long with a longest span of 50 ft (15.2 m) and a deck 22 ft wide.

Who owns Pope ST over Napa River?

It is owned by the City or Municipal Highway Agency.