US Bridges

Mt Vernon Ave over UP RR BNSF RY Edison HWY

Fair

Kern County, California · 0.3 MI N California St. · Structure no. 50C0174

Built
1960
65 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
697 ft
2 main spans
Daily traffic
31,500
2015 count
Owner
County
County Highway Agency

About this bridge

Mt Vernon Ave over UP RR BNSF RY Edison HWY is a prestressed concrete stringer/multi-beam or girder carrying Mt Vernon Ave over UP RR BNSF RY Edison HWY in Kern County, California. It was built in 1960, so it is 65 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 31,500 vehicles a day, roughly 1% of them trucks, projected to reach 48,257 by 2045. The structure is 697 ft (212.4 m) long and 71 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesMt Vernon Ave
CrossesUP RR BNSF RY Edison HWY
Location0.3 MI N California St.
RouteCounty Highway 0
CountyKern County
StateCalifornia
Coordinates35.37046, -118.96743
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 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 rating53.6 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+6 approach)
Design loadHS 20 + Mod
Structure length697 ft (212.4 m)
Longest span107 ft (32.6 m)
Deck width71 ft (21.5 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,500 (2015)
Projected traffic48,257 by 2045
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Mt Vernon Ave over UP RR BNSF RY Edison HWY built?

It was built in 1960, making it 65 years old in 2025.

What condition is Mt Vernon Ave over UP RR BNSF RY Edison HWY 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 December 2023.

How much traffic does Mt Vernon Ave over UP RR BNSF RY Edison HWY carry?

About 31,500 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Mt Vernon Ave over UP RR BNSF RY Edison HWY?

The structure is 697 ft (212.4 m) long with a longest span of 107 ft (32.6 m) and a deck 71 ft wide.

Who owns Mt Vernon Ave over UP RR BNSF RY Edison HWY?

It is owned by the County Highway Agency.