US Bridges

Csah 36 over Root River

FairPosted for load

Fillmore County, Minnesota · 0.1 MI E of JCT TH 16 · Structure no. 23513

Built
1969
56 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
340 ft
5 main spans
Daily traffic
320
2017 count
Owner
County
County Highway Agency

About this bridge

Csah 36 over Root River is a prestressed concrete stringer/multi-beam or girder carrying Csah 36 over Root River in Fillmore County, Minnesota. It was built in 1969, so it is 56 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 5 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 320 vehicles a day, projected to reach 320 by 2039. The structure is 340 ft (103.7 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCsah 36
CrossesRoot River
Location0.1 MI E of JCT TH 16
RouteCounty Highway 36
Coordinates43.73237, -91.93016
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.6 US tons
Inventory rating21.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length340 ft (103.7 m)
Longest span67 ft (20.5 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2017)
Projected traffic320 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 36 over Root River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Csah 36 over Root River 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 April 2024.

How much traffic does Csah 36 over Root River carry?

About 320 vehicles per day (2017 count).

How long is Csah 36 over Root River?

The structure is 340 ft (103.7 m) long with a longest span of 67 ft (20.5 m) and a deck 31 ft wide.

Who owns Csah 36 over Root River?

It is owned by the County Highway Agency.