US Bridges

Mt Vernon Ave over UP RR & AMTRAK

Fair

San Bernardino County, California · 3.1 MI S RTE I-10 · Structure no. 54C0101

Built
1967
58 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
323 ft
5 main spans
Daily traffic
10,432
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mt Vernon Ave over UP RR & AMTRAK is a prestressed concrete stringer/multi-beam or girder carrying Mt Vernon Ave over UP RR & AMTRAK in San Bernardino County, California. It was built in 1967, so it is 58 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 6 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 10,432 vehicles a day, roughly 3% of them trucks, projected to reach 15,036 by 2045. The structure is 323 ft (98.5 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesMt Vernon Ave
CrossesUP RR & AMTRAK
Location3.1 MI S RTE I-10
RouteCity Street 0
CountySan Bernardino County
StateCalifornia
Coordinates34.06233, -117.30996
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating52.1 US tons
Inventory rating35.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length323 ft (98.5 m)
Longest span89 ft (27.1 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,432 (2015)
Projected traffic15,036 by 2045
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 Mt Vernon Ave over UP RR & AMTRAK built?

It was built in 1967, making it 58 years old in 2025.

What condition is Mt Vernon Ave over UP RR & AMTRAK 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 July 2024.

How much traffic does Mt Vernon Ave over UP RR & AMTRAK carry?

About 10,432 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Mt Vernon Ave over UP RR & AMTRAK?

The structure is 323 ft (98.5 m) long with a longest span of 89 ft (27.1 m) and a deck 34 ft wide.

Who owns Mt Vernon Ave over UP RR & AMTRAK?

It is owned by the City or Municipal Highway Agency.