US Bridges

T 178 over Dead Moose River

Good

Carlton County, Minnesota · 0.9 MI S of JCT Csah 6 · Structure no. 97353

Built
1991
34 years old
Condition
Good
inspected November 2023
Type
Culvert
Steel
Length
27 ft
3 main spans
Daily traffic
13
1970 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 178 over Dead Moose River is a steel culvert carrying T 178 over Dead Moose River in Carlton County, Minnesota. It was built in 1991, so it is 34 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 13 vehicles a day, projected to reach 13 by 2029. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT 178
CrossesDead Moose River
Location0.9 MI S of JCT Csah 6
RouteCounty Highway 178
Coordinates46.5232, -92.97011
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13 (1970)
Projected traffic13 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$225 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was T 178 over Dead Moose River built?

It was built in 1991, making it 34 years old in 2025.

What condition is T 178 over Dead Moose 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 November 2023.

How much traffic does T 178 over Dead Moose River carry?

About 13 vehicles per day (1970 count).

How long is T 178 over Dead Moose River?

The structure is 27 ft (8.2 m) long with a longest span of 7 ft (2.1 m).

Who owns T 178 over Dead Moose River?

It is owned by the Town or Township Highway Agency.