US Bridges

T 550 over CO Ditch # 3

Good

Marshall County, Minnesota · 2.1 MI S of JCT Csah 19 · Structure no. 91593

Built
1977
48 years old
Condition
Good
inspected October 2023
Type
Culvert
Steel
Length
29 ft
2 main spans
Daily traffic
20
1994 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 550 over CO Ditch # 3 is a steel culvert carrying T 550 over CO Ditch # 3 in Marshall 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 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 20 vehicles a day, projected to reach 20 by 2029. The structure is 29 ft (8.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesT 550
CrossesCO Ditch # 3
Location2.1 MI S of JCT Csah 19
RouteCounty Highway 550
Coordinates48.28209, -97.0217
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 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length29 ft (8.7 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 traffic20 (1994)
Projected traffic20 by 2029
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-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 550 over CO Ditch # 3 built?

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

What condition is T 550 over CO Ditch # 3 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 550 over CO Ditch # 3 carry?

About 20 vehicles per day (1994 count).

How long is T 550 over CO Ditch # 3?

The structure is 29 ft (8.7 m) long with a longest span of 13 ft (3.9 m).

Who owns T 550 over CO Ditch # 3?

It is owned by the Town or Township Highway Agency.