US Bridges

T 308 over Stream

Fair

Olmsted County, Minnesota · 0.9 MI E JCT Csah 11 on · Structure no. R0190

Built
1987
38 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
37 ft
2 main spans
Daily traffic
75
1986 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 308 over Stream is a concrete culvert carrying T 308 over Stream in Olmsted County, Minnesota. It was built in 1987, so it is 38 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 75 vehicles a day, projected to reach 75 by 2029. The structure is 37 ft (11.4 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesT 308
CrossesStream
Location0.9 MI E JCT Csah 11 on
RouteCounty Highway 308
Coordinates44.10781, -92.34197
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length37 ft (11.4 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (1986)
Projected traffic75 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 308 over Stream built?

It was built in 1987, making it 38 years old in 2025.

What condition is T 308 over Stream in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2024.

How much traffic does T 308 over Stream carry?

About 75 vehicles per day (1986 count).

How long is T 308 over Stream?

The structure is 37 ft (11.4 m) long with a longest span of 14 ft (4.3 m).

Who owns T 308 over Stream?

It is owned by the Town or Township Highway Agency.