US Bridges

Sixth Street over Interstate 15

Fair

Riverside County, California · 08-RIV-015-45.60-NRCO · Structure no. 56 0671

Built
1988
37 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
255 ft
2 main spans
Daily traffic
13,000
2015 count
Owner
State
State Highway Agency

About this bridge

Sixth Street over Interstate 15 is a prestressed concrete continuous box beam or girders - multiple carrying Sixth Street over Interstate 15 in Riverside County, California. It was built in 1988, so it is 37 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 13,000 vehicles a day, roughly 1% of them trucks, projected to reach 14,737 by 2042. The structure is 255 ft (77.6 m) long and 80 ft wide.

CarriesSixth Street
CrossesInterstate 15
Location08-RIV-015-45.60-NRCO
RouteCity Street 0R151
Coordinates33.93762, -117.55641
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment9: Superior to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length255 ft (77.6 m)
Longest span136 ft (41.5 m)
Deck width80 ft (24.4 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2015)
Projected traffic14,737 by 2042
Trucks1%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 Sixth Street over Interstate 15 built?

It was built in 1988, making it 37 years old in 2025.

What condition is Sixth Street over Interstate 15 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 2024.

How much traffic does Sixth Street over Interstate 15 carry?

About 13,000 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Sixth Street over Interstate 15?

The structure is 255 ft (77.6 m) long with a longest span of 136 ft (41.5 m) and a deck 80 ft wide.

Who owns Sixth Street over Interstate 15?

It is owned by the State Highway Agency.