US Bridges

CR 102 over Knife River

PoorPosted for load

Lake County, Minnesota · 2.0 MI N of JCT TH 61 · Structure no. 93091

Built
1974
51 years old
Condition
Poor
inspected October 2024
Type
Slab
Wood or Timber
Length
104 ft
4 main spans
Daily traffic
232
2022 count
Owner
County
County Highway Agency

About this bridge

CR 102 over Knife River is a wood or timber slab carrying CR 102 over Knife River in Lake County, Minnesota. It was built in 1974, so it is 51 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 232 vehicles a day, projected to reach 185 by 2042. The structure is 104 ft (31.7 m) long and 21 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCR 102
CrossesKnife River
Location2.0 MI N of JCT TH 61
RouteCounty Highway 102
Coordinates46.98404, -91.78372
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.9 US tons
Inventory rating12.2 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadH 20
Structure length104 ft (31.7 m)
Longest span26 ft (7.9 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic232 (2022)
Projected traffic185 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 102 over Knife River built?

It was built in 1974, making it 51 years old in 2025.

What condition is CR 102 over Knife River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does CR 102 over Knife River carry?

About 232 vehicles per day (2022 count).

How long is CR 102 over Knife River?

The structure is 104 ft (31.7 m) long with a longest span of 26 ft (7.9 m) and a deck 21 ft wide.

Who owns CR 102 over Knife River?

It is owned by the County Highway Agency.