US Bridges

N 1700 E (s Teton) over Teton Island Canal

FairPosted for load

Madison County, Idaho · 2.5 N. 2.2 E. Rexburg · Structure no. 000000000032875

Built
1964
61 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
60
2023 count
Owner
County
County Highway Agency

About this bridge

N 1700 E (s Teton) over Teton Island Canal is a steel stringer/multi-beam or girder carrying N 1700 E (s Teton) over Teton Island Canal in Madison County, Idaho. It was built in 1964, so it is 61 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 60 vehicles a day, roughly 10% of them trucks, projected to reach 90 by 2039. The structure is 25 ft (7.6 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesN 1700 E (s Teton)
CrossesTeton Island Canal
Location2.5 N. 2.2 E. Rexburg
RouteCounty Highway 0
CountyMadison County
StateIdaho
Coordinates43.86197, -111.74531
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.
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18 US tons
Inventory rating10 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2023)
Projected traffic90 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

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$305,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was N 1700 E (s Teton) over Teton Island Canal built?

It was built in 1964, making it 61 years old in 2025.

What condition is N 1700 E (s Teton) over Teton Island 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 March 2023.

How much traffic does N 1700 E (s Teton) over Teton Island Canal carry?

About 60 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is N 1700 E (s Teton) over Teton Island Canal?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 24 ft wide.

Who owns N 1700 E (s Teton) over Teton Island Canal?

It is owned by the County Highway Agency.