US Bridges

CR 66 over Coon Creek

FairPosted for load

Lyon County, Minnesota · 0.5 MI N of JCT CR 66 · Structure no. 42517

Built
1970
55 years old
Condition
Fair
inspected October 2023
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

CR 66 over Coon Creek is a wood or timber slab carrying CR 66 over Coon Creek in Lyon County, Minnesota. It was built in 1970, so it is 55 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 25 vehicles a day, projected to reach 20 by 2042. The structure is 26 ft (7.9 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR 66
CrossesCoon Creek
Location0.5 MI N of JCT CR 66
RouteCounty Highway 66
CountyLyon County
StateMinnesota
Coordinates44.33299, -96.03886
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating38.7 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length26 ft (7.9 m)
Longest span24 ft (7.2 m)
Deck width28 ft (8.6 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic20 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 66 over Coon Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is CR 66 over Coon Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does CR 66 over Coon Creek carry?

About 25 vehicles per day (2022 count).

How long is CR 66 over Coon Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.2 m) and a deck 28 ft wide.

Who owns CR 66 over Coon Creek?

It is owned by the County Highway Agency.