US Bridges

Mount Vernon Ave over BNSF AMTRAK UP RR Cajon

Fair

San Bernardino County, California · 0.11 MI SW of I-215 · Structure no. 54C0076

Built
1958
67 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
292 ft
4 main spans
Daily traffic
11,600
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mount Vernon Ave over BNSF AMTRAK UP RR Cajon is a steel stringer/multi-beam or girder carrying Mount Vernon Ave over BNSF AMTRAK UP RR Cajon in San Bernardino 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 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 11,600 vehicles a day, roughly 5% of them trucks, projected to reach 19,774 by 2046. The structure is 292 ft (89 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMount Vernon Ave
CrossesBNSF AMTRAK UP RR Cajon
Location0.11 MI SW of I-215
RouteCity Street 0
CountySan Bernardino County
StateCalifornia
Coordinates34.13851, -117.3177
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
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 inspectionFebruary 2024
Inspection intervalevery 24 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 alignment7: Better than present minimum criteria
Operating rating67.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length292 ft (89 m)
Longest span90 ft (27.4 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,600 (2024)
Projected traffic19,774 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
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 Mount Vernon Ave over BNSF AMTRAK UP RR Cajon built?

It was built in 1958, making it 67 years old in 2025.

What condition is Mount Vernon Ave over BNSF AMTRAK UP RR Cajon 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 February 2024.

How much traffic does Mount Vernon Ave over BNSF AMTRAK UP RR Cajon carry?

About 11,600 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mount Vernon Ave over BNSF AMTRAK UP RR Cajon?

The structure is 292 ft (89 m) long with a longest span of 90 ft (27.4 m) and a deck 33 ft wide.

Who owns Mount Vernon Ave over BNSF AMTRAK UP RR Cajon?

It is owned by the City or Municipal Highway Agency.