US Bridges

LA Sierra Avenue over LA Sierra Channel

Fair

Riverside County, California · At Collett Avenue · Structure no. 56C0170

Built
1963
62 years old, rebuilt 1975
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
35 ft
3 main spans
Daily traffic
18,000
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

LA Sierra Avenue over LA Sierra Channel is a concrete culvert carrying LA Sierra Avenue over LA Sierra Channel in Riverside County, California. It was built in 1963 and reconstructed in 1975, so it is 62 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 6 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 18,000 vehicles a day, roughly 1% of them trucks, projected to reach 39,385 by 2044. The structure is 35 ft (10.7 m) long and 101 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLA Sierra Avenue
CrossesLA Sierra Channel
LocationAt Collett Avenue
RouteCity Street 0
Coordinates33.91164, -117.48319
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span11 ft (3.3 m)
Deck width101 ft (30.8 m)
Roadway width86 ft (26.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,000 (2018)
Projected traffic39,385 by 2044
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 LA Sierra Avenue over LA Sierra Channel built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1975.

What condition is LA Sierra Avenue over LA Sierra Channel 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 January 2024.

How much traffic does LA Sierra Avenue over LA Sierra Channel carry?

About 18,000 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is LA Sierra Avenue over LA Sierra Channel?

The structure is 35 ft (10.7 m) long with a longest span of 11 ft (3.3 m) and a deck 101 ft wide.

Who owns LA Sierra Avenue over LA Sierra Channel?

It is owned by the City or Municipal Highway Agency.