US Bridges

T 18 over Rose Creek

Poor

Mower County, Minnesota · 0.3 MI W of JCT Csah 19 · Structure no. 50539

Built
1976
49 years old
Condition
Poor
inspected May 2024
Type
Tee Beam
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
29
1986 count
Owner
County
County Highway Agency

About this bridge

T 18 over Rose Creek is a prestressed concrete tee beam carrying T 18 over Rose Creek in Mower County, Minnesota. It was built in 1976, so it is 49 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 29 vehicles a day, projected to reach 29 by 2029. The structure is 100 ft (30.5 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesT 18
CrossesRose Creek
Location0.3 MI W of JCT Csah 19
RouteCounty Highway 18
CountyMower County
StateMinnesota
Coordinates43.6161, -92.83338
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.5 US tons
Inventory rating33.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span50 ft (15.1 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (1986)
Projected traffic29 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$1,000 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was T 18 over Rose Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is T 18 over Rose Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does T 18 over Rose Creek carry?

About 29 vehicles per day (1986 count).

How long is T 18 over Rose Creek?

The structure is 100 ft (30.5 m) long with a longest span of 50 ft (15.1 m) and a deck 32 ft wide.

Who owns T 18 over Rose Creek?

It is owned by the County Highway Agency.