US Bridges

State Route 20 over Bank Street

Good

Nevada County, California · 03-NEV-020-R13.04-GVY · Structure no. 17 0051

Built
1969
56 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
135 ft
3 main spans
Daily traffic
34,500
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 20 over Bank Street is a concrete continuous box beam or girders - multiple carrying State Route 20 over Bank Street in Nevada County, California. It was built in 1969, so it is 56 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 34,500 vehicles a day, projected to reach 81,556 by 2041. The structure is 135 ft (41.1 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 20
CrossesBank Street
Location03-NEV-020-R13.04-GVY
RouteState Highway 20
Coordinates39.2177, -121.05937
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating32.5 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length135 ft (41.1 m)
Longest span73 ft (22.3 m)
Deck width76 ft (23.2 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,500 (2020)
Projected traffic81,556 by 2041
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 20 over Bank Street built?

It was built in 1969, making it 56 years old in 2025.

What condition is State Route 20 over Bank Street 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 State Route 20 over Bank Street carry?

About 34,500 vehicles per day (2020 count).

How long is State Route 20 over Bank Street?

The structure is 135 ft (41.1 m) long with a longest span of 73 ft (22.3 m) and a deck 76 ft wide.

Who owns State Route 20 over Bank Street?

It is owned by the State Highway Agency.