US Bridges

Broadford Road over Big Wood River

Good

Blaine County, Idaho · 1.8 N. 1.7 W. Bellevue · Structure no. 000000000023750

Built
1985
40 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
103 ft
1 main span
Daily traffic
700
2023 count
Owner
County
County Highway Agency

About this bridge

Broadford Road over Big Wood River is a prestressed concrete stringer/multi-beam or girder carrying Broadford Road over Big Wood River in Blaine County, Idaho. It was built in 1985, so it is 40 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 700 vehicles a day, roughly 19% of them trucks, projected to reach 1,050 by 2042. The structure is 103 ft (31.4 m) long and 34 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesBroadford Road
CrossesBig Wood River
Location1.8 N. 1.7 W. Bellevue
RouteCounty Highway 0
StateIdaho
Coordinates43.49133, -114.29528
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span100 ft (30.5 m)
Deck width34 ft (10.3 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2023)
Projected traffic1,050 by 2042
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Broadford Road over Big Wood River built?

It was built in 1985, making it 40 years old in 2025.

What condition is Broadford Road over Big Wood River 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 September 2024.

How much traffic does Broadford Road over Big Wood River carry?

About 700 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is Broadford Road over Big Wood River?

The structure is 103 ft (31.4 m) long with a longest span of 100 ft (30.5 m) and a deck 34 ft wide.

Who owns Broadford Road over Big Wood River?

It is owned by the County Highway Agency.