US Bridges

T 256 over Mud Brook

Fair

Crow Wing County, Minnesota · 0.8 MI W of JCT CR 106 · Structure no. 18519

Built
1990
35 years old
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
62 ft
3 main spans
Daily traffic
20
1989 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 256 over Mud Brook is a wood or timber slab carrying T 256 over Mud Brook in Crow Wing County, Minnesota. It was built in 1990, so it is 35 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 20 vehicles a day, projected to reach 20 by 2029. The structure is 62 ft (18.9 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesT 256
CrossesMud Brook
Location0.8 MI W of JCT CR 106
RouteCounty Highway 256
Coordinates46.68697, -93.89297
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.6 US tons
Inventory rating40.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span26 ft (7.9 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (1989)
Projected traffic20 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was T 256 over Mud Brook built?

It was built in 1990, making it 35 years old in 2025.

What condition is T 256 over Mud Brook in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does T 256 over Mud Brook carry?

About 20 vehicles per day (1989 count).

How long is T 256 over Mud Brook?

The structure is 62 ft (18.9 m) long with a longest span of 26 ft (7.9 m) and a deck 26 ft wide.

Who owns T 256 over Mud Brook?

It is owned by the Town or Township Highway Agency.