US Bridges

Mn 9 over CO Ditch # 8

Good

Clay County, Minnesota · 1.0 MI S of Felton · Structure no. 8775

Built
1952
73 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
2,085
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 9 over CO Ditch # 8 is a concrete culvert carrying Mn 9 over CO Ditch # 8 in Clay County, Minnesota. It was built in 1952, so it is 73 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 2,085 vehicles a day, roughly 24% of them trucks, projected to reach 1,900 by 2042. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 21.1 mi (34 km).

Location

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CarriesMn 9
CrossesCO Ditch # 8
Location1.0 MI S of Felton
RouteState Highway 9
CountyClay County
StateMinnesota
Coordinates47.06386, -96.50075
Functional classRural Minor Arterial

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 inspectionSeptember 2023
Inspection intervalevery 24 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 rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 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 traffic2,085 (2022)
Projected traffic1,900 by 2042
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mn 9 over CO Ditch # 8 built?

It was built in 1952, making it 73 years old in 2025.

What condition is Mn 9 over CO Ditch # 8 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 September 2023.

How much traffic does Mn 9 over CO Ditch # 8 carry?

About 2,085 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is Mn 9 over CO Ditch # 8?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3.2 m).

Who owns Mn 9 over CO Ditch # 8?

It is owned by the State Highway Agency.