US Bridges

T 310 over CO Ditch # 34

Fair

Clay County, Minnesota · 0.8 MI N of JCT Csah 2 · Structure no. L9676

Built
1977
48 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
31 ft
2 main spans
Daily traffic
19
1986 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 310 over CO Ditch # 34 is a concrete culvert carrying T 310 over CO Ditch # 34 in Clay County, Minnesota. It was built in 1977, so it is 48 years old, older 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 19 vehicles a day, projected to reach 19 by 2029. The structure is 31 ft (9.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT 310
CrossesCO Ditch # 34
Location0.8 MI N of JCT Csah 2
RouteCounty Highway 310
Coordinates46.67104, -96.50473
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 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 length31 ft (9.3 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19 (1986)
Projected traffic19 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 CO Ditch # 34 built?

It was built in 1977, making it 48 years old in 2025.

What condition is T 310 over CO Ditch # 34 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 October 2023.

How much traffic does T 310 over CO Ditch # 34 carry?

About 19 vehicles per day (1986 count).

How long is T 310 over CO Ditch # 34?

The structure is 31 ft (9.3 m) long with a longest span of 13 ft (3.9 m).

Who owns T 310 over CO Ditch # 34?

It is owned by the Town or Township Highway Agency.