US Bridges

Csah 30 over Main Ditch

Fair

Pipestone County, Minnesota · 0.4 MI N of JCT Csah 22 · Structure no. 59523

Built
1990
35 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
76 ft
3 main spans
Daily traffic
984
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 30 over Main Ditch is a prestressed concrete tee beam carrying Csah 30 over Main Ditch in Pipestone County, Minnesota. It was built in 1990, so it is 35 years old, younger 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 5 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 984 vehicles a day, projected to reach 990 by 2041. The structure is 76 ft (23.2 m) long and 50 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCsah 30
CrossesMain Ditch
Location0.4 MI N of JCT Csah 22
RouteCounty Highway 30
CountyPipestone County
StateMinnesota
Coordinates44.01511, -96.31766
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.2 US tons
Inventory rating49.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length76 ft (23.2 m)
Longest span25 ft (7.7 m)
Deck width50 ft (15.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic984 (2021)
Projected traffic990 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 30 over Main Ditch built?

It was built in 1990, making it 35 years old in 2025.

What condition is Csah 30 over Main Ditch 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 30 over Main Ditch carry?

About 984 vehicles per day (2021 count).

How long is Csah 30 over Main Ditch?

The structure is 76 ft (23.2 m) long with a longest span of 25 ft (7.7 m) and a deck 50 ft wide.

Who owns Csah 30 over Main Ditch?

It is owned by the County Highway Agency.