US Bridges

T 108 over White Earth River

Good

Mahnomen County, Minnesota · 1.2 MI E of JCT US 59 · Structure no. 44J08

Built
2021
4 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
15
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 108 over White Earth River is a concrete culvert carrying T 108 over White Earth River in Mahnomen County, Minnesota. It was built in 2021, so it is 4 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 16 by 2040. The structure is 34 ft (10.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesT 108
CrossesWhite Earth River
Location1.2 MI E of JCT US 59
RouteCounty Highway 108
Coordinates47.2673, -95.90774
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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 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 alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length34 ft (10.5 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2020)
Projected traffic16 by 2040
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

OwnerTown or Township Highway Agency
Maintained byCounty 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 T 108 over White Earth River built?

It was built in 2021, making it 4 years old in 2025.

What condition is T 108 over White Earth 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 October 2023.

How much traffic does T 108 over White Earth River carry?

About 15 vehicles per day (2020 count).

How long is T 108 over White Earth River?

The structure is 34 ft (10.5 m) long with a longest span of 16 ft (4.9 m).

Who owns T 108 over White Earth River?

It is owned by the Town or Township Highway Agency and maintained by the County Highway Agency.