US Bridges

T 161 over Mud River

Good

Beltrami County, Minnesota · 2.7 MI W of JCT Csah 32 · Structure no. R0152

Built
1987
38 years old
Condition
Good
inspected June 2022
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
20
1987 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 161 over Mud River is a concrete culvert carrying T 161 over Mud River in Beltrami County, Minnesota. It was built in 1987, so it is 38 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20 vehicles a day, projected to reach 20 by 2029. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesT 161
CrossesMud River
Location2.7 MI W of JCT Csah 32
RouteCounty Highway 161
Coordinates47.78831, -94.87954
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span10 ft (2.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (1987)
Projected traffic20 by 2029
Trucks—
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

OwnerTown or Township Highway Agency
Maintained byCounty 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 161 over Mud River built?

It was built in 1987, making it 38 years old in 2025.

What condition is T 161 over Mud 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 June 2022.

How much traffic does T 161 over Mud River carry?

About 20 vehicles per day (1987 count).

How long is T 161 over Mud River?

The structure is 26 ft (7.9 m) long with a longest span of 10 ft (2.9 m).

Who owns T 161 over Mud River?

It is owned by the Town or Township Highway Agency and maintained by the County Highway Agency.