US Bridges

CR 111 over Knife River

Good

Lake County, Minnesota · 1.5 MI W of JCT Csah 12 · Structure no. 38514

Built
1982
43 years old
Condition
Good
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
90
2022 count
Owner
County
County Highway Agency

About this bridge

CR 111 over Knife River is a prestressed concrete tee beam carrying CR 111 over Knife River in Lake County, Minnesota. It was built in 1982, so it is 43 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 90 vehicles a day, projected to reach 75 by 2042. The structure is 60 ft (18.2 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCR 111
CrossesKnife River
Location1.5 MI W of JCT Csah 12
RouteCounty Highway 111
Coordinates47.05445, -91.7631
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.7 US tons
Inventory rating28.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length60 ft (18.2 m)
Longest span57 ft (17.4 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2022)
Projected traffic75 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 111 over Knife River built?

It was built in 1982, making it 43 years old in 2025.

What condition is CR 111 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 2023.

How much traffic does CR 111 over Knife River carry?

About 90 vehicles per day (2022 count).

How long is CR 111 over Knife River?

The structure is 60 ft (18.2 m) long with a longest span of 57 ft (17.4 m) and a deck 32 ft wide.

Who owns CR 111 over Knife River?

It is owned by the County Highway Agency.