US Bridges

N 2100 E over St. Anthony Canal

FairPosted for load

Fremont County, Idaho · 1.1 N. 1.0 E. Parker · Structure no. 000000000032035

Built
1961
64 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
150
2023 count
Owner
County
County Highway Agency

About this bridge

N 2100 E over St. Anthony Canal is a prestressed concrete tee beam carrying N 2100 E over St. Anthony Canal in Fremont County, Idaho. It was built in 1961, so it is 64 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. Its operating status is: posted for load restriction.

It carries about 150 vehicles a day, roughly 5% of them trucks, projected to reach 225 by 2039. The structure is 31 ft (9.4 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN 2100 E
CrossesSt. Anthony Canal
Location1.1 N. 1.0 E. Parker
RouteCounty Highway 0
CountyFremont County
StateIdaho
Coordinates43.97408, -111.73789
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width23 ft (7 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic225 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$360,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was N 2100 E over St. Anthony Canal built?

It was built in 1961, making it 64 years old in 2025.

What condition is N 2100 E over St. Anthony 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 N 2100 E over St. Anthony Canal carry?

About 150 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is N 2100 E over St. Anthony Canal?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 23 ft wide.

Who owns N 2100 E over St. Anthony Canal?

It is owned by the County Highway Agency.