US Bridges

T 166 over Ten Mile Creek

PoorPosted for load

Lac qui Parle County, Minnesota · 1.3 MI N of JCT Csah 8 · Structure no. L9094

Built
1967
58 years old
Condition
Poor
inspected June 2024
Type
Slab
Wood or Timber
Length
48 ft
3 main spans
Daily traffic
25
1973 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 166 over Ten Mile Creek is a wood or timber slab carrying T 166 over Ten Mile Creek in Lac qui Parle County, Minnesota. It was built in 1967, so it is 58 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 4 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 25 vehicles a day, projected to reach 25 by 2029. The structure is 48 ft (14.6 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT 166
CrossesTen Mile Creek
Location1.3 MI N of JCT Csah 8
RouteCounty Highway 166
Coordinates44.90984, -95.88018
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating25.9 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span15 ft (4.5 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (1973)
Projected traffic25 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$350 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was T 166 over Ten Mile Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is T 166 over Ten Mile Creek 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 June 2024.

How much traffic does T 166 over Ten Mile Creek carry?

About 25 vehicles per day (1973 count).

How long is T 166 over Ten Mile Creek?

The structure is 48 ft (14.6 m) long with a longest span of 15 ft (4.5 m) and a deck 22 ft wide.

Who owns T 166 over Ten Mile Creek?

It is owned by the Town or Township Highway Agency.