US Bridges

US 12 over Ditch

Good

Swift County, Minnesota · 0.5 MI E of JCT TH 59 · Structure no. 91229

Built
1971
54 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
1,318
2022 count
Owner
State
State Highway Agency

About this bridge

US 12 over Ditch is a concrete culvert carrying US 12 over Ditch in Swift County, Minnesota. It was built in 1971, so it is 54 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,318 vehicles a day, roughly 47% of them trucks, projected to reach 1,400 by 2042. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 14.3 mi (23 km).

CarriesUS 12
CrossesDitch
Location0.5 MI E of JCT TH 59
RouteU.S. Route 12
Coordinates45.28266, -95.90053
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.5 m)
Longest span10 ft (2.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,318 (2022)
Projected traffic1,400 by 2042
Trucks47%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 12 over Ditch built?

It was built in 1971, making it 54 years old in 2025.

What condition is US 12 over Ditch 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 September 2024.

How much traffic does US 12 over Ditch carry?

About 1,318 vehicles per day (2022 count), of which roughly 47% are trucks.

How long is US 12 over Ditch?

The structure is 25 ft (7.5 m) long with a longest span of 10 ft (2.9 m).

Who owns US 12 over Ditch?

It is owned by the State Highway Agency.