US Bridges

CR 121 over Lost River

Good

Clearwater County, Minnesota · 0.1 MI N of JCT Csah 6 · Structure no. 15J29

Built
2022
3 years old
Condition
Good
inspected October 2022
Type
Culvert
Steel
Length
22 ft
2 main spans
Daily traffic
55
2015 count
Owner
County
County Highway Agency

About this bridge

CR 121 over Lost River is a steel culvert carrying CR 121 over Lost River in Clearwater County, Minnesota. It was built in 2022, so it is 3 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 55 vehicles a day, projected to reach 55 by 2039. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCR 121
CrossesLost River
Location0.1 MI N of JCT Csah 6
RouteCounty Highway 121
Coordinates47.67486, -95.55961
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.
Culvert9 ExcellentNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable 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 loadHL 93
Structure length22 ft (6.6 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (2015)
Projected traffic55 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 121 over Lost River built?

It was built in 2022, making it 3 years old in 2025.

What condition is CR 121 over Lost River 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 CR 121 over Lost River carry?

About 55 vehicles per day (2015 count).

How long is CR 121 over Lost River?

The structure is 22 ft (6.6 m) long with a longest span of 9 ft (2.7 m).

Who owns CR 121 over Lost River?

It is owned by the County Highway Agency.