US Bridges

N 3900 E; Iona RD over Burgess Cnl; SW Rigby Br

Good

Jefferson County, Idaho · 0.5 S 0.4 W Rigby · Structure no. 000000000032291

Built
2013
12 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
54 ft
1 main span
Daily traffic
3,200
2023 count
Owner
County
County Highway Agency

About this bridge

N 3900 E; Iona RD over Burgess Cnl; SW Rigby Br is a steel stringer/multi-beam or girder carrying N 3900 E; Iona RD over Burgess Cnl; SW Rigby Br in Jefferson County, Idaho. It was built in 2013, so it is 12 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,200 vehicles a day, projected to reach 4,800 by 2042. The structure is 54 ft (16.5 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesN 3900 E; Iona RD
CrossesBurgess Cnl; SW Rigby Br
Location0.5 S 0.4 W Rigby
RouteCounty Highway 0
CountyJefferson County
StateIdaho
Coordinates43.66506, -111.92364
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length54 ft (16.5 m)
Longest span49 ft (14.9 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2023)
Projected traffic4,800 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N 3900 E; Iona RD over Burgess Cnl; SW Rigby Br built?

It was built in 2013, making it 12 years old in 2025.

What condition is N 3900 E; Iona RD over Burgess Cnl; SW Rigby Br in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does N 3900 E; Iona RD over Burgess Cnl; SW Rigby Br carry?

About 3,200 vehicles per day (2023 count).

How long is N 3900 E; Iona RD over Burgess Cnl; SW Rigby Br?

The structure is 54 ft (16.5 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.

Who owns N 3900 E; Iona RD over Burgess Cnl; SW Rigby Br?

It is owned by the County Highway Agency.