US Bridges

T 228 over Little Iowa River

FairPosted for load

Mower County, Minnesota · 1.8 MI N of JCT Csah 11 · Structure no. L5129

Built
1916
109 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
25
1986 count
Owner
County
County Highway Agency

About this bridge

T 228 over Little Iowa River is a steel stringer/multi-beam or girder carrying T 228 over Little Iowa River in Mower County, Minnesota. It was built in 1916, so it is 109 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 25 vehicles a day, projected to reach 25 by 2029. The structure is 22 ft (6.7 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesT 228
CrossesLittle Iowa River
Location1.8 MI N of JCT Csah 11
RouteCounty Highway 228
CountyMower County
StateMinnesota
Coordinates43.58479, -92.4893
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.7 US tons
Inventory rating13.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (1986)
Projected traffic25 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$226.1 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was T 228 over Little Iowa River built?

It was built in 1916, making it 109 years old in 2025.

What condition is T 228 over Little Iowa 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 July 2024.

How much traffic does T 228 over Little Iowa River carry?

About 25 vehicles per day (1986 count).

How long is T 228 over Little Iowa River?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 25 ft wide.

Who owns T 228 over Little Iowa River?

It is owned by the County Highway Agency.