US Bridges

Sma 7804; N2000W over S.Fk.Teton River

Fair

Madison County, Idaho · 1.5 W. 0.7 N. Rexburg · Structure no. 000000000020920

Built
1977
48 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
108 ft
2 main spans
Daily traffic
4,700
2023 count
Owner
County
County Highway Agency

About this bridge

Sma 7804; N2000W over S.Fk.Teton River is a prestressed concrete stringer/multi-beam or girder carrying Sma 7804; N2000W over S.Fk.Teton River in Madison County, Idaho. It was built in 1977, so it is 48 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 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 4,700 vehicles a day, roughly 10% of them trucks, projected to reach 7,050 by 2042. The structure is 108 ft (32.9 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSma 7804; N2000W
CrossesS.Fk.Teton River
Location1.5 W. 0.7 N. Rexburg
RouteCounty Highway 7804
CountyMadison County
StateIdaho
Coordinates43.83564, -111.81806
Functional classUrban Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating56 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length108 ft (32.9 m)
Longest span52 ft (15.8 m)
Deck width38 ft (11.5 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,700 (2023)
Projected traffic7,050 by 2042
Trucks10%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sma 7804; N2000W over S.Fk.Teton River built?

It was built in 1977, making it 48 years old in 2025.

What condition is Sma 7804; N2000W over S.Fk.Teton 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 April 2024.

How much traffic does Sma 7804; N2000W over S.Fk.Teton River carry?

About 4,700 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Sma 7804; N2000W over S.Fk.Teton River?

The structure is 108 ft (32.9 m) long with a longest span of 52 ft (15.8 m) and a deck 38 ft wide.

Who owns Sma 7804; N2000W over S.Fk.Teton River?

It is owned by the County Highway Agency.