US Bridges

Broadway Blvd over Big Wood River

FairPosted for load

Blaine County, Idaho · In Ketchum · Structure no. 000000000023664

Built
2001
24 years old
Condition
Fair
inspected September 2023
Type
Arch - Thru
Wood or Timber
Length
116 ft
1 main span
Daily traffic
350
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Broadway Blvd over Big Wood River is a wood or timber arch - thru carrying Broadway Blvd over Big Wood River in Blaine County, Idaho. It was built in 2001, so it is 24 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 350 vehicles a day, roughly 10% of them trucks, projected to reach 525 by 2039. The structure is 116 ft (35.4 m) long and 17 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBroadway Blvd
CrossesBig Wood River
LocationIn Ketchum
RouteCity Street 0
CountyBlaine County
StateIdaho
Coordinates43.68742, -114.373
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47 US tons
Inventory rating35.1 US tons

Structure

Structure typeArch - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length116 ft (35.4 m)
Longest span110 ft (33.5 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic350 (2023)
Projected traffic525 by 2039
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Broadway Blvd over Big Wood River built?

It was built in 2001, making it 24 years old in 2025.

What condition is Broadway Blvd over Big Wood River 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 2023.

How much traffic does Broadway Blvd over Big Wood River carry?

About 350 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Broadway Blvd over Big Wood River?

The structure is 116 ft (35.4 m) long with a longest span of 110 ft (33.5 m) and a deck 17 ft wide.

Who owns Broadway Blvd over Big Wood River?

It is owned by the City or Municipal Highway Agency.