US Bridges

S 100 East Street over Salem Union Canal

Fair

Fremont County, Idaho · In ST Anthony;s 100E ST · Structure no. 000000000032220

Built
1980
45 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
23 ft
1 main span
Daily traffic
190
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

S 100 East Street over Salem Union Canal is a prestressed concrete tee beam carrying S 100 East Street over Salem Union Canal in Fremont 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 190 vehicles a day, roughly 10% of them trucks, projected to reach 285 by 2039. The structure is 23 ft (7 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS 100 East Street
CrossesSalem Union Canal
LocationIn ST Anthony;s 100E ST
RouteCity Street 0
StateIdaho
Coordinates43.95772, -111.68061
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.7 US tons
Inventory rating27.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length23 ft (7 m)
Longest span22 ft (6.7 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic190 (2023)
Projected traffic285 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S 100 East Street over Salem Union Canal built?

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

What condition is S 100 East Street over Salem Union 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 November 2024.

How much traffic does S 100 East Street over Salem Union Canal carry?

About 190 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is S 100 East Street over Salem Union Canal?

The structure is 23 ft (7 m) long with a longest span of 22 ft (6.7 m) and a deck 28 ft wide.

Who owns S 100 East Street over Salem Union Canal?

It is owned by the City or Municipal Highway Agency.