US Bridges

66th Ave over Whitewater River

Fair

Riverside County, California · 0.9 Mi. W/O ST RTE 86S · Structure no. 56C0579

Built
1973
52 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
43 ft
1 main span
Daily traffic
3,765
2016 count
Owner
County
County Highway Agency

About this bridge

66th Ave over Whitewater River is a concrete slab carrying 66th Ave over Whitewater River in Riverside County, California. It was built in 1973, so it is 52 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 3,765 vehicles a day, roughly 10% of them trucks, projected to reach 6,202 by 2040. The structure is 43 ft (13.1 m) long and 43 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
Carries66th Ave
CrossesWhitewater River
Location0.9 Mi. W/O ST RTE 86S
RouteCounty Highway 0
CountyRiverside County
StateCalifornia
Coordinates33.56928, -116.10854
Functional classRural Major Collector

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110 US tons
Inventory rating70 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,765 (2016)
Projected traffic6,202 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 66th Ave over Whitewater River built?

It was built in 1973, making it 52 years old in 2025.

What condition is 66th Ave over Whitewater River 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 66th Ave over Whitewater River carry?

About 3,765 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is 66th Ave over Whitewater River?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 43 ft wide.

Who owns 66th Ave over Whitewater River?

It is owned by the County Highway Agency.