US Bridges

Montgomery ST over UP RR & BNSF RY

Fair

Butte County, California · E of Washington Ave · Structure no. 12C0018

Built
1939
86 years old
Condition
Fair
inspected March 2023
Type
Girder and Floorbeam System
Steel
Length
88 ft
1 main span
Daily traffic
7,491
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Montgomery ST over UP RR & BNSF RY is a steel girder and floorbeam system carrying Montgomery ST over UP RR & BNSF RY in Butte County, California. It was built in 1939, so it is 86 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 7,491 vehicles a day, roughly 4% of them trucks, projected to reach 9,620 by 2041. The structure is 88 ft (26.8 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMontgomery ST
CrossesUP RR & BNSF RY
LocationE of Washington Ave
RouteCity Street 0
CountyButte County
StateCalifornia
Coordinates39.51666, -121.54796
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.9 US tons
Inventory rating49.6 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length88 ft (26.8 m)
Longest span80 ft (24.4 m)
Deck width58 ft (17.7 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,491 (2019)
Projected traffic9,620 by 2041
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Montgomery ST over UP RR & BNSF RY built?

It was built in 1939, making it 86 years old in 2025.

What condition is Montgomery ST over UP RR & BNSF RY in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Montgomery ST over UP RR & BNSF RY carry?

About 7,491 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Montgomery ST over UP RR & BNSF RY?

The structure is 88 ft (26.8 m) long with a longest span of 80 ft (24.4 m) and a deck 58 ft wide.

Who owns Montgomery ST over UP RR & BNSF RY?

It is owned by the City or Municipal Highway Agency.