US Bridges

Csah 21 over Ditch

PoorPosted for load

Lac qui Parle County, Minnesota · 2.0 MI S of JCT TH 40 · Structure no. 93114

Built
1973
52 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
54 ft
2 main spans
Daily traffic
65
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 21 over Ditch is a wood or timber stringer/multi-beam or girder carrying Csah 21 over Ditch in Lac qui Parle 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 poor condition with a lowest component rating of 3 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 65 vehicles a day, projected to reach 65 by 2039. The structure is 54 ft (16.5 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCsah 21
CrossesDitch
Location2.0 MI S of JCT TH 40
RouteCounty Highway 21
CountyLac qui Parle County
StateMinnesota
Coordinates44.97914, -96.10406
Functional classRural Minor Collector

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.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.4 US tons
Inventory rating15.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length54 ft (16.5 m)
Longest span35 ft (10.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65 (2016)
Projected traffic65 by 2039
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$420 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 21 over Ditch built?

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

What condition is Csah 21 over Ditch 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 May 2024.

How much traffic does Csah 21 over Ditch carry?

About 65 vehicles per day (2016 count).

How long is Csah 21 over Ditch?

The structure is 54 ft (16.5 m) long with a longest span of 35 ft (10.8 m) and a deck 30 ft wide.

Who owns Csah 21 over Ditch?

It is owned by the County Highway Agency.