US Bridges

T 310 over Stream

Good

Polk County, Minnesota · 3.2 MI W of JCT TH 75 · Structure no. 97140

Built
1991
34 years old
Condition
Good
inspected October 2022
Type
Culvert
Concrete
Length
40 ft
3 main spans
Daily traffic
6
1973 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 310 over Stream is a concrete culvert carrying T 310 over Stream in Polk County, Minnesota. It was built in 1991, so it is 34 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 6 vehicles a day, projected to reach 6 by 2029. The structure is 40 ft (12.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesT 310
CrossesStream
Location3.2 MI W of JCT TH 75
RouteCounty Highway 310
CountyPolk County
StateMinnesota
Coordinates47.96337, -96.70363
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2022
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 spans3
Design loadHS 25 or greater
Structure length40 ft (12.3 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 traffic6 (1973)
Projected traffic6 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 310 over Stream built?

It was built in 1991, making it 34 years old in 2025.

What condition is T 310 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 October 2022.

How much traffic does T 310 over Stream carry?

About 6 vehicles per day (1973 count).

How long is T 310 over Stream?

The structure is 40 ft (12.3 m) long with a longest span of 10 ft (3 m).

Who owns T 310 over Stream?

It is owned by the Town or Township Highway Agency.