US Bridges

T 108 over Stream

Good

Rock County, Minnesota · 0.1 MI S of JCT TH 23 · Structure no. 97966

Built
1995
30 years old
Condition
Good
inspected November 2021
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
25
1990 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 108 over Stream is a concrete culvert carrying T 108 over Stream in Rock County, Minnesota. It was built in 1995, so it is 30 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 25 vehicles a day, projected to reach 25 by 2029. The structure is 27 ft (8.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesT 108
CrossesStream
Location0.1 MI S of JCT TH 23
RouteCounty Highway 108
Coordinates43.75603, -96.41243
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2021
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 loadH 20
Structure length27 ft (8.1 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (1990)
Projected traffic25 by 2029
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 byTown or Township 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 T 108 over Stream built?

It was built in 1995, making it 30 years old in 2025.

What condition is T 108 over Stream 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 November 2021.

How much traffic does T 108 over Stream carry?

About 25 vehicles per day (1990 count).

How long is T 108 over Stream?

The structure is 27 ft (8.1 m) long with a longest span of 10 ft (3.2 m).

Who owns T 108 over Stream?

It is owned by the Town or Township Highway Agency.