US Bridges

W 600 N over Main Drain

Good

Minidoka County, Idaho · 6.0 N Rupert · Structure no. 000000000025182

Built
2023
2 years old
Condition
Good
inspected June 2023
Type
Frame
Concrete
Length
26 ft
1 main span
Daily traffic
10
2023 count
Owner
Local
Other Local Agency

About this bridge

W 600 N over Main Drain is a concrete frame carrying W 600 N over Main Drain in Minidoka County, Idaho. It was built in 2023, so it is 2 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 10 vehicles a day, roughly 10% of them trucks, projected to reach 15 by 2042. The structure is 26 ft (7.9 m) long and 60 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesW 600 N
CrossesMain Drain
Location6.0 N Rupert
RouteCounty Highway 0
StateIdaho
Coordinates42.70383, -113.67947
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating86.1 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width60 ft (18.3 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic15 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W 600 N over Main Drain built?

It was built in 2023, making it 2 years old in 2025.

What condition is W 600 N over Main Drain 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 June 2023.

How much traffic does W 600 N over Main Drain carry?

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

How long is W 600 N over Main Drain?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 60 ft wide.

Who owns W 600 N over Main Drain?

It is owned by the Other Local Agency.