US Bridges

Csah 5 over Three Mile Creek

Fair

Lyon County, Minnesota · 0.6 MI S of JCT CR 76 · Structure no. 7209

Built
1958
67 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
94 ft
4 main spans
Daily traffic
340
2020 count
Owner
County
County Highway Agency

About this bridge

Csah 5 over Three Mile Creek is a wood or timber stringer/multi-beam or girder carrying Csah 5 over Three Mile Creek in Lyon County, Minnesota. It was built in 1958, so it is 67 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.

It carries about 340 vehicles a day, projected to reach 390 by 2040. The structure is 94 ft (28.7 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCsah 5
CrossesThree Mile Creek
Location0.6 MI S of JCT CR 76
RouteCounty Highway 5
Coordinates44.46471, -95.89744
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.5 US tons
Inventory rating36.7 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadH 20
Structure length94 ft (28.7 m)
Longest span23 ft (7 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic340 (2020)
Projected traffic390 by 2040
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$370 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 5 over Three Mile Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Csah 5 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 September 2024.

How much traffic does Csah 5 over Three Mile Creek carry?

About 340 vehicles per day (2020 count).

How long is Csah 5 over Three Mile Creek?

The structure is 94 ft (28.7 m) long with a longest span of 23 ft (7 m) and a deck 30 ft wide.

Who owns Csah 5 over Three Mile Creek?

It is owned by the County Highway Agency.