US Bridges

3800 East Road over Dry Bed Creek

Fair

Jefferson County, Idaho · 2.1 N. 1.4 W. Rigby · Structure no. 000000000032590

Built
1973
52 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
15
2023 count
Owner
County
County Highway Agency

About this bridge

3800 East Road over Dry Bed Creek is a prestressed concrete tee beam carrying 3800 East Road over Dry Bed Creek in Jefferson County, Idaho. It was built in 1973, so it is 52 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 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 15 vehicles a day, roughly 10% of them trucks, projected to reach 23 by 2039. The structure is 42 ft (12.8 m) long and 18 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
Carries3800 East Road
CrossesDry Bed Creek
Location2.1 N. 1.4 W. Rigby
RouteCounty Highway 0
CountyJefferson County
StateIdaho
Coordinates43.70378, -111.94344
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41.7 US tons
Inventory rating27.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length42 ft (12.8 m)
Longest span41 ft (12.5 m)
Deck width18 ft (5.6 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2023)
Projected traffic23 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$450,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 3800 East Road over Dry Bed Creek built?

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

What condition is 3800 East Road over Dry Bed 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 March 2024.

How much traffic does 3800 East Road over Dry Bed Creek carry?

About 15 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 3800 East Road over Dry Bed Creek?

The structure is 42 ft (12.8 m) long with a longest span of 41 ft (12.5 m) and a deck 18 ft wide.

Who owns 3800 East Road over Dry Bed Creek?

It is owned by the County Highway Agency.