US Bridges

State Route 70 over Greenhorn CR UP RR BNSF

Good

Plumas County, California · 02-PLU-070-51.21 · Structure no. 09 0062

Built
1956
69 years old, rebuilt 2019
Condition
Good
inspected June 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
426 ft
7 main spans
Daily traffic
3,425
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 70 over Greenhorn CR UP RR BNSF is a prestressed concrete stringer/multi-beam or girder carrying State Route 70 over Greenhorn CR UP RR BNSF in Plumas County, California. It was built in 1956 and reconstructed in 2019, so it is 69 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 3,425 vehicles a day, projected to reach 4,285 by 2038. The structure is 426 ft (129.7 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesState Route 70
CrossesGreenhorn CR UP RR BNSF
Location02-PLU-070-51.21
RouteState Highway 70
CountyPlumas County
StateCalifornia
Coordinates39.91171, -120.81318
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 protection9 ExcellentNo problems noted.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadUnknown
Structure length426 ft (129.7 m)
Longest span60 ft (18.3 m)
Deck width47 ft (14.2 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,425 (2009)
Projected traffic4,285 by 2038
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 70 over Greenhorn CR UP RR BNSF built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2019.

What condition is State Route 70 over Greenhorn CR UP RR BNSF 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 2021.

How much traffic does State Route 70 over Greenhorn CR UP RR BNSF carry?

About 3,425 vehicles per day (2009 count).

How long is State Route 70 over Greenhorn CR UP RR BNSF?

The structure is 426 ft (129.7 m) long with a longest span of 60 ft (18.3 m) and a deck 47 ft wide.

Who owns State Route 70 over Greenhorn CR UP RR BNSF?

It is owned by the State Highway Agency.