US Bridges

T 90 over Doran Slough

Good

Wilkin County, Minnesota · 0.4 MI W of JCT Csah 9 · Structure no. 96827

Built
1990
35 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
45 ft
3 main spans
Daily traffic
15
1990 count
Owner
County
County Highway Agency

About this bridge

T 90 over Doran Slough is a concrete culvert carrying T 90 over Doran Slough in Wilkin County, Minnesota. It was built in 1990, so it is 35 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15 vehicles a day, projected to reach 15 by 2029. The structure is 45 ft (13.6 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesT 90
CrossesDoran Slough
Location0.4 MI W of JCT Csah 9
RouteCounty Highway 90
Coordinates46.225, -96.58217
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 spans3
Design loadHS 20
Structure length45 ft (13.6 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 traffic15 (1990)
Projected traffic15 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 90 over Doran Slough built?

It was built in 1990, making it 35 years old in 2025.

What condition is T 90 over Doran Slough in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does T 90 over Doran Slough carry?

About 15 vehicles per day (1990 count).

How long is T 90 over Doran Slough?

The structure is 45 ft (13.6 m) long with a longest span of 11 ft (3.5 m).

Who owns T 90 over Doran Slough?

It is owned by the County Highway Agency.