US Bridges

Sierra Ave over UP RR & AMTRAK

Fair

San Bernardino County, California · 0.1 MI S of I-10 · Structure no. 54C0063

Built
1959
66 years old, rebuilt 2002
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
22,000
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sierra Ave over UP RR & AMTRAK is a prestressed concrete stringer/multi-beam or girder carrying Sierra Ave over UP RR & AMTRAK in San Bernardino County, California. It was built in 1959 and reconstructed in 2002, so it is 66 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 22,000 vehicles a day, roughly 15% of them trucks, projected to reach 24,484 by 2045. The structure is 82 ft (25 m) long and 148 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSierra Ave
CrossesUP RR & AMTRAK
Location0.1 MI S of I-10
RouteCity Street 0
CountySan Bernardino County
StateCalifornia
Coordinates34.06654, -117.43545
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating12.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length82 ft (25 m)
Longest span82 ft (25 m)
Deck width148 ft (45.2 m)
Roadway width132 ft (40.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,000 (2020)
Projected traffic24,484 by 2045
Trucks15%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 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 Sierra Ave over UP RR & AMTRAK built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2002.

What condition is Sierra 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 June 2024.

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

About 22,000 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Sierra Ave over UP RR & AMTRAK?

The structure is 82 ft (25 m) long with a longest span of 82 ft (25 m) and a deck 148 ft wide.

Who owns Sierra Ave over UP RR & AMTRAK?

It is owned by the City or Municipal Highway Agency.