US Bridges

Mn 38 over Big Fork River

Good

Itasca County, Minnesota · In Big Fork · Structure no. 31014

Built
1999
26 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
259 ft
3 main spans
Daily traffic
1,850
2019 count
Owner
State
State Highway Agency

About this bridge

Mn 38 over Big Fork River is a prestressed concrete stringer/multi-beam or girder carrying Mn 38 over Big Fork River in Itasca County, Minnesota. It was built in 1999, so it is 26 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 1,850 vehicles a day, roughly 6% of them trucks, projected to reach 2,000 by 2039. The structure is 259 ft (78.9 m) long and 54 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesMn 38
CrossesBig Fork River
LocationIn Big Fork
RouteState Highway 38
Coordinates47.74701, -93.65445
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.2 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length259 ft (78.9 m)
Longest span95 ft (29 m)
Deck width54 ft (16.5 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,850 (2019)
Projected traffic2,000 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemNo

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 Mn 38 over Big Fork River built?

It was built in 1999, making it 26 years old in 2025.

What condition is Mn 38 over Big 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 May 2024.

How much traffic does Mn 38 over Big Fork River carry?

About 1,850 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is Mn 38 over Big Fork River?

The structure is 259 ft (78.9 m) long with a longest span of 95 ft (29 m) and a deck 54 ft wide.

Who owns Mn 38 over Big Fork River?

It is owned by the State Highway Agency.