US Bridges

Csah 8 over Three Mile Creek

FairPosted for load

Lyon County, Minnesota · 0.2 MI W of JCT CR 65 · Structure no. 42523

Built
1973
52 years old
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
78 ft
3 main spans
Daily traffic
435
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 8 over Three Mile Creek is a wood or timber slab carrying Csah 8 over Three Mile Creek in Lyon County, Minnesota. It was built in 1973, so it is 52 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 435 vehicles a day, projected to reach 440 by 2038. The structure is 78 ft (23.8 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCsah 8
CrossesThree Mile Creek
Location0.2 MI W of JCT CR 65
RouteCounty Highway 8
Coordinates44.51595, -95.84173
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.6 US tons
Inventory rating35.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span26 ft (7.9 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic435 (2018)
Projected traffic440 by 2038
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 Csah 8 over Three Mile Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Csah 8 over Three Mile 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 2024.

How much traffic does Csah 8 over Three Mile Creek carry?

About 435 vehicles per day (2018 count).

How long is Csah 8 over Three Mile Creek?

The structure is 78 ft (23.8 m) long with a longest span of 26 ft (7.9 m) and a deck 38 ft wide.

Who owns Csah 8 over Three Mile Creek?

It is owned by the County Highway Agency.