US Bridges

Csah 20 over Okabena Creek

Good

Jackson County, Minnesota · 1.6 MI E of JCT TH 60 · Structure no. 32571

Built
2012
13 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
255
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 20 over Okabena Creek is a concrete continuous slab carrying Csah 20 over Okabena Creek in Jackson County, Minnesota. It was built in 2012, so it is 13 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 255 vehicles a day, projected to reach 255 by 2039. The structure is 80 ft (24.5 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCsah 20
CrossesOkabena Creek
Location1.6 MI E of JCT TH 60
RouteCounty Highway 20
Coordinates43.73211, -95.38603
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating100.4 US tons
Inventory rating60.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length80 ft (24.5 m)
Longest span30 ft (9.1 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic255 (2016)
Projected traffic255 by 2039
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 20 over Okabena Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is Csah 20 over Okabena Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Csah 20 over Okabena Creek carry?

About 255 vehicles per day (2016 count).

How long is Csah 20 over Okabena Creek?

The structure is 80 ft (24.5 m) long with a longest span of 30 ft (9.1 m) and a deck 39 ft wide.

Who owns Csah 20 over Okabena Creek?

It is owned by the County Highway Agency.