US Bridges

T 159 over Redwood River

Fair

Redwood County, Minnesota · 0.4 MI E of JCT Csah 30 · Structure no. 64529

Built
1978
47 years old
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
144 ft
5 main spans
Daily traffic
16
1971 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 159 over Redwood River is a wood or timber slab carrying T 159 over Redwood River in Redwood County, Minnesota. It was built in 1978, so it is 47 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 16 vehicles a day, projected to reach 16 by 2029. The structure is 144 ft (43.9 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT 159
CrossesRedwood River
Location0.4 MI E of JCT Csah 30
RouteCounty Highway 159
Coordinates44.50236, -95.55378
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 protection7 GoodSome minor problems.
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.5 US tons
Inventory rating42.4 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadHS 20
Structure length144 ft (43.9 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 traffic16 (1971)
Projected traffic16 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was T 159 over Redwood River built?

It was built in 1978, making it 47 years old in 2025.

What condition is T 159 over Redwood 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 2024.

How much traffic does T 159 over Redwood River carry?

About 16 vehicles per day (1971 count).

How long is T 159 over Redwood River?

The structure is 144 ft (43.9 m) long with a longest span of 32 ft (9.8 m) and a deck 30 ft wide.

Who owns T 159 over Redwood River?

It is owned by the Town or Township Highway Agency.