US Bridges

Csah 20 over Fountain Lake

Fair

Freeborn County, Minnesota · 0.9 MI W of JCT Csah 22 · Structure no. 24530

Built
1997
28 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete Continuous
Length
99 ft
3 main spans
Daily traffic
4,400
2017 count
Owner
County
County Highway Agency

About this bridge

Csah 20 over Fountain Lake is a concrete continuous slab carrying Csah 20 over Fountain Lake in Freeborn County, Minnesota. It was built in 1997, so it is 28 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 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 4,400 vehicles a day, projected to reach 4,400 by 2039. The structure is 99 ft (30.1 m) long and 56 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCsah 20
CrossesFountain Lake
Location0.9 MI W of JCT Csah 22
RouteCounty Highway 20
CountyFreeborn County
StateMinnesota
Coordinates43.66697, -93.37668
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.5 US tons
Inventory rating44.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length99 ft (30.1 m)
Longest span37 ft (11.2 m)
Deck width56 ft (17 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,400 (2017)
Projected traffic4,400 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 20 over Fountain Lake built?

It was built in 1997, making it 28 years old in 2025.

What condition is Csah 20 over Fountain Lake 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 December 2024.

How much traffic does Csah 20 over Fountain Lake carry?

About 4,400 vehicles per day (2017 count).

How long is Csah 20 over Fountain Lake?

The structure is 99 ft (30.1 m) long with a longest span of 37 ft (11.2 m) and a deck 56 ft wide.

Who owns Csah 20 over Fountain Lake?

It is owned by the County Highway Agency.