US Bridges

Csah 11 over CO Ditch # 71

Fair

Le Sueur County, Minnesota · 0.5 MI S of JCT CR 118 · Structure no. 40502

Built
1963
62 years old
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
54 ft
3 main spans
Daily traffic
907
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 11 over CO Ditch # 71 is a wood or timber slab carrying Csah 11 over CO Ditch # 71 in Le Sueur County, Minnesota. It was built in 1963, so it is 62 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 907 vehicles a day, projected to reach 1,000 by 2041. The structure is 54 ft (16.5 m) long and 31 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesCsah 11
CrossesCO Ditch # 71
Location0.5 MI S of JCT CR 118
RouteCounty Highway 11
Coordinates44.51384, -93.76819
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 statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.6 US tons
Inventory rating36.5 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 20
Structure length54 ft (16.5 m)
Longest span18 ft (5.5 m)
Deck width31 ft (9.5 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic907 (2021)
Projected traffic1,000 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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$696 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 11 over CO Ditch # 71 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Csah 11 over CO Ditch # 71 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 11 over CO Ditch # 71 carry?

About 907 vehicles per day (2021 count).

How long is Csah 11 over CO Ditch # 71?

The structure is 54 ft (16.5 m) long with a longest span of 18 ft (5.5 m) and a deck 31 ft wide.

Who owns Csah 11 over CO Ditch # 71?

It is owned by the County Highway Agency.