US Bridges

T 980 over Long Prairie River

Good

Todd County, Minnesota · 0.1 MI N of JCT Csah 28 · Structure no. 77520

Built
1993
32 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
157 ft
3 main spans
Daily traffic
115
1997 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 980 over Long Prairie River is a prestressed concrete tee beam carrying T 980 over Long Prairie River in Todd County, Minnesota. It was built in 1993, so it is 32 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 115 vehicles a day, projected to reach 115 by 2029. The structure is 157 ft (47.9 m) long and 36 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesT 980
CrossesLong Prairie River
Location0.1 MI N of JCT Csah 28
RouteCounty Highway 980
Coordinates46.28815, -94.71584
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.2 US tons
Inventory rating42.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length157 ft (47.9 m)
Longest span52 ft (15.9 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic115 (1997)
Projected traffic115 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T 980 over Long Prairie River built?

It was built in 1993, making it 32 years old in 2025.

What condition is T 980 over Long Prairie River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does T 980 over Long Prairie River carry?

About 115 vehicles per day (1997 count).

How long is T 980 over Long Prairie River?

The structure is 157 ft (47.9 m) long with a longest span of 52 ft (15.9 m) and a deck 36 ft wide.

Who owns T 980 over Long Prairie River?

It is owned by the Town or Township Highway Agency.