US Bridges

CR 115 over Knife River

Good

Mille Lacs County, Minnesota · 0.5 MI E of JCT Csah 27 · Structure no. 48J25

Built
2008
17 years old
Condition
Good
inspected June 2021
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
25
2018 count
Owner
County
County Highway Agency

About this bridge

CR 115 over Knife River is a concrete culvert carrying CR 115 over Knife River in Mille Lacs County, Minnesota. It was built in 2008, so it is 17 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25 vehicles a day, projected to reach 30 by 2038. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 115
CrossesKnife River
Location0.5 MI E of JCT Csah 27
RouteCounty Highway 115
Coordinates46.08245, -93.46359
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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2021
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 rating64.8 US tons
Inventory rating43.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2018)
Projected traffic30 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR 115 over Knife River built?

It was built in 2008, making it 17 years old in 2025.

What condition is CR 115 over Knife 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 June 2021.

How much traffic does CR 115 over Knife River carry?

About 25 vehicles per day (2018 count).

How long is CR 115 over Knife River?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns CR 115 over Knife River?

It is owned by the County Highway Agency.