US Bridges

State Route 70 over Rush Creek

Good

Plumas County, California · 02-PLU-070-23.67 · Structure no. 09 0026

Built
1932
93 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
1,345
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 70 over Rush Creek is a concrete continuous slab carrying State Route 70 over Rush Creek in Plumas County, California. It was built in 1932, so it is 93 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 1,345 vehicles a day, roughly 21% of them trucks, projected to reach 1,530 by 2040. The structure is 30 ft (9.1 m) long and 45 ft wide. If it were closed, the detour would be 23 mi (37 km).

CarriesState Route 70
CrossesRush Creek
Location02-PLU-070-23.67
RouteState Highway 70
Coordinates40.02483, -121.12276
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating90.4 US tons
Inventory rating54.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 15
Structure length30 ft (9.1 m)
Longest span12 ft (3.7 m)
Deck width45 ft (13.7 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,345 (2009)
Projected traffic1,530 by 2040
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 70 over Rush Creek built?

It was built in 1932, making it 93 years old in 2025.

What condition is State Route 70 over Rush Creek 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 June 2023.

How much traffic does State Route 70 over Rush Creek carry?

About 1,345 vehicles per day (2009 count), of which roughly 21% are trucks.

How long is State Route 70 over Rush Creek?

The structure is 30 ft (9.1 m) long with a longest span of 12 ft (3.7 m) and a deck 45 ft wide.

Who owns State Route 70 over Rush Creek?

It is owned by the State Highway Agency.