US Bridges

Sierra Avenue over State Route 210

Fair

San Bernardino County, California · 08-SBD-210-14.93-FNA · Structure no. 54 0650

Built
2001
24 years old
Condition
Fair
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
274 ft
2 main spans
Daily traffic
9,500
2015 count
Owner
State
State Highway Agency

About this bridge

Sierra Avenue over State Route 210 is a prestressed concrete continuous box beam or girders - multiple carrying Sierra Avenue over State Route 210 in San Bernardino County, California. It was built in 2001, so it is 24 years old, younger 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 9,500 vehicles a day, roughly 7% of them trucks, projected to reach 13,009 by 2047. The structure is 274 ft (83.5 m) long and 157 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesSierra Avenue
CrossesState Route 210
Location08-SBD-210-14.93-FNA
RouteCity Street 0
CountySan Bernardino County
StateCalifornia
Coordinates34.13673, -117.43625
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2025
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating57.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length274 ft (83.5 m)
Longest span139 ft (42.5 m)
Deck width157 ft (47.9 m)
Roadway width149 ft (45.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,500 (2015)
Projected traffic13,009 by 2047
Trucks7%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Sierra Avenue over State Route 210 built?

It was built in 2001, making it 24 years old in 2025.

What condition is Sierra Avenue over State Route 210 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 2025.

How much traffic does Sierra Avenue over State Route 210 carry?

About 9,500 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Sierra Avenue over State Route 210?

The structure is 274 ft (83.5 m) long with a longest span of 139 ft (42.5 m) and a deck 157 ft wide.

Who owns Sierra Avenue over State Route 210?

It is owned by the State Highway Agency.