US Bridges

Old Banning-Idyllw over Smith Creek

Fair

Riverside County, California · 1.06 Mi. S/O Route 10 Fwy · Structure no. 56C0131

Built
1970
55 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
73 ft
3 main spans
Daily traffic
50
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Old Banning-Idyllw over Smith Creek is a concrete continuous slab carrying Old Banning-Idyllw over Smith Creek in Riverside County, California. It was built in 1970, so it is 55 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 50 vehicles a day, roughly 1% of them trucks, projected to reach 109 by 2043. The structure is 73 ft (22.3 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesOld Banning-Idyllw
CrossesSmith Creek
Location1.06 Mi. S/O Route 10 Fwy
RouteCity Street 0
CountyRiverside County
StateCalifornia
Coordinates33.90915, -116.87662
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating68.6 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length73 ft (22.3 m)
Longest span28 ft (8.5 m)
Deck width29 ft (8.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2014)
Projected traffic109 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Old Banning-Idyllw over Smith Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Old Banning-Idyllw over Smith Creek 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 September 2023.

How much traffic does Old Banning-Idyllw over Smith Creek carry?

About 50 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Old Banning-Idyllw over Smith Creek?

The structure is 73 ft (22.3 m) long with a longest span of 28 ft (8.5 m) and a deck 29 ft wide.

Who owns Old Banning-Idyllw over Smith Creek?

It is owned by the City or Municipal Highway Agency.