Service RD over Ditch

Good

St. Louis County, Minnesota · 0.4 MI S of JCT CR 320 · Structure no. 97536

Built: 1996; 29 years old
Condition: Good; inspected May 2023
Type: Culvert; Concrete
Length: 26 ft; 2 main spans
Daily traffic: 4; 1987 count
Owner: County; County Highway Agency

About this bridge

Service RD over Ditch is a concrete culvert carrying Service RD over Ditch in St. Louis County, Minnesota. It was built in 1996, so it is 29 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 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 4 vehicles a day, projected to reach 4 by 2029. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 123 mi (198 km).

Location

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CarriesService RD

CrossesDitch

Location0.4 MI S of JCT CR 320

CountySt. Louis County

StateMinnesota

Coordinates47.26179, -92.60284

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.

Component	Rating	Meaning
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.
Culvert	7 Good	Some minor problems.

Last inspectionMay 2023

Inspection intervalevery 48 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 rating64.8 US tons

Inventory rating43.2 US tons

Structure

Structure typeCulvert

MaterialConcrete

DeckNot applicable

Main spans2

Design loadHS 25 or greater

Structure length26 ft (7.9 m)

Longest span10 ft (3 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4 (1987)

Projected traffic4 by 2029

Trucks—

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed123 mi (198 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 Service RD over Ditch built?

It was built in 1996, making it 29 years old in 2025.

What condition is Service RD 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 May 2023.

How much traffic does Service RD over Ditch carry?

About 4 vehicles per day (1987 count).

How long is Service RD over Ditch?

The structure is 26 ft (7.9 m) long with a longest span of 10 ft (3 m).

Who owns Service RD over Ditch?

It is owned by the County Highway Agency.