US Bridges

T 59 over Lac Qui Parle River

PoorPosted for load

Yellow Medicine County, Minnesota · 1.5 MI S of JCT Csah 36 · Structure no. L7931

Built
1915
110 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
5
1990 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 59 over Lac Qui Parle River is a steel stringer/multi-beam or girder carrying T 59 over Lac Qui Parle River in Yellow Medicine County, Minnesota. It was built in 1915, so it is 110 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 5 vehicles a day, projected to reach 5 by 2029. The structure is 25 ft (7.6 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesT 59
CrossesLac Qui Parle River
Location1.5 MI S of JCT Csah 36
RouteCounty Highway 59
Coordinates44.63831, -96.33797
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating11.7 US tons
Inventory rating7.2 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width22 ft (6.8 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (1990)
Projected traffic5 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$300 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was T 59 over Lac Qui Parle River built?

It was built in 1915, making it 110 years old in 2025.

What condition is T 59 over Lac Qui Parle River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does T 59 over Lac Qui Parle River carry?

About 5 vehicles per day (1990 count).

How long is T 59 over Lac Qui Parle River?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 22 ft wide.

Who owns T 59 over Lac Qui Parle River?

It is owned by the Town or Township Highway Agency.