US Bridges

1900 East Road over Salmon River Canal

Fair

Twin Falls County, Idaho · 4.7 S. 5.0 W. Hollister · Structure no. 000000000025700

Built
1980
45 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
30
2023 count
Owner
Local
Other Local Agency

About this bridge

1900 East Road over Salmon River Canal is a steel stringer/multi-beam or girder carrying 1900 East Road over Salmon River Canal in Twin Falls County, Idaho. It was built in 1980, so it is 45 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.

It carries about 30 vehicles a day, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 36 ft (11 m) long and 18 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
Carries1900 East Road
CrossesSalmon River Canal
Location4.7 S. 5.0 W. Hollister
RouteCounty Highway 0
CountyTwin Falls County
StateIdaho
Coordinates42.28472, -114.67386
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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 rating45 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span35 ft (10.7 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2042
Trucks50%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$345,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 1900 East Road over Salmon River Canal built?

It was built in 1980, making it 45 years old in 2025.

What condition is 1900 East Road over Salmon River Canal 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 October 2024.

How much traffic does 1900 East Road over Salmon River Canal carry?

About 30 vehicles per day (2023 count), of which roughly 50% are trucks.

How long is 1900 East Road over Salmon River Canal?

The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 18 ft wide.

Who owns 1900 East Road over Salmon River Canal?

It is owned by the Other Local Agency.