US Bridges

Mt Vernon Ave over Santa Ana River

Fair

San Bernardino County, California · 0.6 MI S of RTE I-10 · Structure no. 54C0100

Built
1967
58 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete Continuous
Length
987 ft
12 main spans
Daily traffic
20,000
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mt Vernon Ave over Santa Ana River is a concrete continuous tee beam carrying Mt Vernon Ave over Santa Ana River 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 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 20,000 vehicles a day, roughly 10% of them trucks, projected to reach 24,247 by 2045. The structure is 987 ft (300.8 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
CrossesSanta Ana River
Location0.6 MI S of RTE I-10
RouteCity Street 0
CountySan Bernardino County
StateCalifornia
Coordinates34.05791, -117.30994
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating27.4 US tons
Inventory rating18.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length987 ft (300.8 m)
Longest span87 ft (26.5 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2015)
Projected traffic24,247 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mt Vernon Ave over Santa Ana River built?

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

What condition is Mt Vernon Ave over Santa Ana River 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 Santa Ana River carry?

About 20,000 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is Mt Vernon Ave over Santa Ana River?

The structure is 987 ft (300.8 m) long with a longest span of 87 ft (26.5 m) and a deck 34 ft wide.

Who owns Mt Vernon Ave over Santa Ana River?

It is owned by the City or Municipal Highway Agency.