US Bridges

State Route 70 over UP RR & BNSF RY

Good

Butte County, California · 03-BUT-070-26.81 · Structure no. 12 0138

Built
1958
67 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
147 ft
3 main spans
Daily traffic
2,550
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 70 over UP RR & BNSF RY is a steel stringer/multi-beam or girder carrying State Route 70 over UP RR & BNSF RY in Butte County, California. It was built in 1958, so it is 67 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 2,550 vehicles a day, projected to reach 3,982 by 2041. The structure is 147 ft (44.8 m) long and 37 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesState Route 70
CrossesUP RR & BNSF RY
Location03-BUT-070-26.81
RouteState Highway 70
CountyButte County
StateCalifornia
Coordinates39.65229, -121.55393
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 inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length147 ft (44.8 m)
Longest span48 ft (14.6 m)
Deck width37 ft (11.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,550 (2020)
Projected traffic3,982 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed123.7 mi (199 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—
NavigationNot applicable (no waterway)

Frequently asked questions

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

It was built in 1958, making it 67 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 April 2023.

How much traffic does State Route 70 over UP RR & BNSF RY carry?

About 2,550 vehicles per day (2020 count).

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

The structure is 147 ft (44.8 m) long with a longest span of 48 ft (14.6 m) and a deck 37 ft wide.

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

It is owned by the State Highway Agency.