US Bridges

3950 North RD over Cedar Draw

Fair

Twin Falls County, Idaho · 0.5N 0.9W Filer;jrdn Cor · Structure no. 000000000025565

Built
1968
57 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
300
2023 count
Owner
Local
Other Local Agency

About this bridge

3950 North RD over Cedar Draw is a prestressed concrete tee beam carrying 3950 North RD over Cedar Draw in Twin Falls County, Idaho. It was built in 1968, so it is 57 years old, older than the Idaho average of 45.3 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 300 vehicles a day, roughly 10% of them trucks, projected to reach 450 by 2039. The structure is 29 ft (8.8 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries3950 North RD
CrossesCedar Draw
Location0.5N 0.9W Filer;jrdn Cor
RouteCounty Highway 0
StateIdaho
Coordinates42.57117, -114.63147
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length29 ft (8.8 m)
Longest span27 ft (8.2 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2023)
Projected traffic450 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$363,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 3950 North RD over Cedar Draw built?

It was built in 1968, making it 57 years old in 2025.

What condition is 3950 North RD over Cedar Draw 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 February 2023.

How much traffic does 3950 North RD over Cedar Draw carry?

About 300 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 3950 North RD over Cedar Draw?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m) and a deck 27 ft wide.

Who owns 3950 North RD over Cedar Draw?

It is owned by the Other Local Agency.