US Bridges

T 158 over Buffalo River

Fair

Clay County, Minnesota · 0.4 MI N of JCT TH 10 · Structure no. 14513

Built
1979
46 years old
Condition
Fair
inspected October 2023
Type
Slab
Wood or Timber
Length
96 ft
3 main spans
Daily traffic
39
1986 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 158 over Buffalo River is a wood or timber slab carrying T 158 over Buffalo River in Clay County, Minnesota. It was built in 1979, so it is 46 years old, older 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 39 vehicles a day, projected to reach 39 by 2029. The structure is 96 ft (29.3 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesT 158
CrossesBuffalo River
Location0.4 MI N of JCT TH 10
RouteCounty Highway 158
CountyClay County
StateMinnesota
Coordinates46.8844, -96.53723
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating35.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length96 ft (29.3 m)
Longest span32 ft (9.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39 (1986)
Projected traffic39 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 158 over Buffalo River built?

It was built in 1979, making it 46 years old in 2025.

What condition is T 158 over Buffalo River 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 2023.

How much traffic does T 158 over Buffalo River carry?

About 39 vehicles per day (1986 count).

How long is T 158 over Buffalo River?

The structure is 96 ft (29.3 m) long with a longest span of 32 ft (9.8 m) and a deck 30 ft wide.

Who owns T 158 over Buffalo River?

It is owned by the Town or Township Highway Agency.