US Bridges

Pearl Street over Downie River

Good

Sierra County, California · Downieville · Structure no. 13C0003

Built
1934
91 years old, rebuilt 1980
Condition
Good
inspected July 2024
Type
Truss - Thru
Steel
Length
118 ft
1 main span
Daily traffic
100
2006 count
Owner
County
County Highway Agency

About this bridge

Pearl Street over Downie River is a steel truss - thru carrying Pearl Street over Downie River in Sierra County, California. It was built in 1934 and reconstructed in 1980, so it is 91 years old, older 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 156 by 2042. The structure is 118 ft (36.1 m) long and 12 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesPearl Street
CrossesDownie River
LocationDownieville
RouteCounty Highway 0
Coordinates39.56312, -120.82541
Functional classRural Minor Collector

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 inspectionJuly 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating27.4 US tons
Inventory rating19.6 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1 (+3 approach)
Design loadUnknown
Structure length118 ft (36.1 m)
Longest span78 ft (23.8 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2006)
Projected traffic156 by 2042
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Pearl Street over Downie River built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1980.

What condition is Pearl Street over Downie River 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 July 2024.

How much traffic does Pearl Street over Downie River carry?

About 100 vehicles per day (2006 count), of which roughly 1% are trucks.

How long is Pearl Street over Downie River?

The structure is 118 ft (36.1 m) long with a longest span of 78 ft (23.8 m) and a deck 12 ft wide.

Who owns Pearl Street over Downie River?

It is owned by the County Highway Agency.