US Bridges

Interstate 10 over County Line Road

Fair

Riverside County, California · 08-RIV-010-R0.02-CMSA · Structure no. 56 0484

Built
1965
60 years old, rebuilt 2011
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
121 ft
3 main spans
Daily traffic
51,500
2016 count
Owner
State
State Highway Agency

About this bridge

Interstate 10 over County Line Road is a prestressed concrete stringer/multi-beam or girder carrying Interstate 10 over County Line Road in Riverside County, California. It was built in 1965 and reconstructed in 2011, so it is 60 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 51,500 vehicles a day, roughly 13% of them trucks, projected to reach 77,050 by 2040. The structure is 121 ft (36.9 m) long and 174 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesInterstate 10
CrossesCounty Line Road
Location08-RIV-010-R0.02-CMSA
RouteInterstate 10
CountyRiverside County
StateCalifornia
Coordinates34.00368, -117.06509
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
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 rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length121 ft (36.9 m)
Longest span63 ft (19.2 m)
Deck width174 ft (53 m)
Roadway width159 ft (48.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,500 (2016)
Projected traffic77,050 by 2040
Trucks13%
Lanes on structure6
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 10 over County Line Road built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2011.

What condition is Interstate 10 over County Line Road 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 March 2023.

How much traffic does Interstate 10 over County Line Road carry?

About 51,500 vehicles per day (2016 count), of which roughly 13% are trucks.

How long is Interstate 10 over County Line Road?

The structure is 121 ft (36.9 m) long with a longest span of 63 ft (19.2 m) and a deck 174 ft wide.

Who owns Interstate 10 over County Line Road?

It is owned by the State Highway Agency.