US Bridges

M 10 over Little Fork River

Good

St. Louis County, Minnesota · 0.1 MI N of JCT Csah 25 · Structure no. 69A50

Built
2018
7 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
100 ft
3 main spans
Daily traffic
700
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

M 10 over Little Fork River is a prestressed concrete stringer/multi-beam or girder carrying M 10 over Little Fork River in St. Louis County, Minnesota. It was built in 2018, so it is 7 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 700 vehicles a day, projected to reach 840 by 2036. The structure is 100 ft (30.5 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesM 10
CrossesLittle Fork River
Location0.1 MI N of JCT Csah 25
RouteCity Street 10
Coordinates47.85441, -92.68893
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.4 US tons
Inventory rating55.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length100 ft (30.5 m)
Longest span32 ft (9.8 m)
Deck width37 ft (11.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2016)
Projected traffic840 by 2036
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was M 10 over Little Fork River built?

It was built in 2018, making it 7 years old in 2025.

What condition is M 10 over Little Fork River 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 2023.

How much traffic does M 10 over Little Fork River carry?

About 700 vehicles per day (2016 count).

How long is M 10 over Little Fork River?

The structure is 100 ft (30.5 m) long with a longest span of 32 ft (9.8 m) and a deck 37 ft wide.

Who owns M 10 over Little Fork River?

It is owned by the City or Municipal Highway Agency.