US Bridges

Broadford Road over Big Wood R;w.Bellevue Br

Fair

Blaine County, Idaho · 0.2 N. 0.3 W. Bellevue · Structure no. 000000000023700

Built
1974
51 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
112 ft
1 main span
Daily traffic
1,800
2023 count
Owner
County
County Highway Agency

About this bridge

Broadford Road over Big Wood R;w.Bellevue Br is a prestressed concrete stringer/multi-beam or girder carrying Broadford Road over Big Wood R;w.Bellevue Br in Blaine County, Idaho. It was built in 1974, so it is 51 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 1,800 vehicles a day, roughly 8% of them trucks, projected to reach 2,700 by 2042. The structure is 112 ft (34.1 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesBroadford Road
CrossesBig Wood R;w.Bellevue Br
Location0.2 N. 0.3 W. Bellevue
RouteCounty Highway 0
CountyBlaine County
StateIdaho
Coordinates43.46797, -114.26806
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.7 US tons
Inventory rating27.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length112 ft (34.1 m)
Longest span108 ft (32.9 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2023)
Projected traffic2,700 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Broadford Road over Big Wood R;w.Bellevue Br built?

It was built in 1974, making it 51 years old in 2025.

What condition is Broadford Road over Big Wood R;w.Bellevue Br 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 September 2024.

How much traffic does Broadford Road over Big Wood R;w.Bellevue Br carry?

About 1,800 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Broadford Road over Big Wood R;w.Bellevue Br?

The structure is 112 ft (34.1 m) long with a longest span of 108 ft (32.9 m) and a deck 24 ft wide.

Who owns Broadford Road over Big Wood R;w.Bellevue Br?

It is owned by the County Highway Agency.