US Bridges

T 128 over Trib of N Br Root R

Fair

Mower County, Minnesota · 0.6 MI N of JCT Csah 1 · Structure no. 50J69

Built
2003
22 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
401
2003 count
Owner
County
County Highway Agency

About this bridge

T 128 over Trib of N Br Root R is a concrete culvert carrying T 128 over Trib of N Br Root R in Mower County, Minnesota. It was built in 2003, so it is 22 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 401 vehicles a day, projected to reach 401 by 2029. The structure is 29 ft (8.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT 128
CrossesTrib of N Br Root R
Location0.6 MI N of JCT Csah 1
RouteCounty Highway 128
Coordinates43.81394, -92.76981
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 25 or greater
Structure length29 ft (8.9 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic401 (2003)
Projected traffic401 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

OwnerCounty 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 128 over Trib of N Br Root R built?

It was built in 2003, making it 22 years old in 2025.

What condition is T 128 over Trib of N Br Root R 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 September 2024.

How much traffic does T 128 over Trib of N Br Root R carry?

About 401 vehicles per day (2003 count).

How long is T 128 over Trib of N Br Root R?

The structure is 29 ft (8.9 m) long with a longest span of 11 ft (3.5 m).

Who owns T 128 over Trib of N Br Root R?

It is owned by the County Highway Agency.