US Bridges

State Route 70 over UP RR & BNSF RY

Good

Plumas County, California · 02-PLU-070-35.56 · Structure no. 09 0017

Built
1932
93 years old
Condition
Good
inspected June 2023
Type
Tee Beam
Concrete
Length
40 ft
1 main span
Daily traffic
3,375
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 70 over UP RR & BNSF RY is a concrete tee beam carrying State Route 70 over UP RR & BNSF RY 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 3,375 vehicles a day, projected to reach 3,673 by 2040. The structure is 40 ft (12.2 m) long and 27 ft wide. If it were closed, the detour would be 9.3 mi (15 km).

Location

Open in Google Maps
CarriesState Route 70
CrossesUP RR & BNSF RY
Location02-PLU-070-35.56
RouteState Highway 70
CountyPlumas County
StateCalifornia
Coordinates40.02318, -120.96269
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.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span38 ft (11.7 m)
Deck width27 ft (8.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,375 (2009)
Projected traffic3,673 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed9.3 mi (15 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 70 over UP RR & BNSF RY built?

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

What condition is State Route 70 over UP RR & BNSF RY 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 UP RR & BNSF RY carry?

About 3,375 vehicles per day (2009 count).

How long is State Route 70 over UP RR & BNSF RY?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.7 m) and a deck 27 ft wide.

Who owns State Route 70 over UP RR & BNSF RY?

It is owned by the State Highway Agency.