US Bridges

Csah 39 over Skunk River

Good

Morrison County, Minnesota · 0.9 MI W of JCT Csah 23 · Structure no. 49J09

Built
1999
26 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
49 ft
3 main spans
Daily traffic
1,554
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 39 over Skunk River is a concrete culvert carrying Csah 39 over Skunk River in Morrison County, Minnesota. It was built in 1999, so it is 26 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,554 vehicles a day, roughly 3% of them trucks, projected to reach 1,900 by 2042. The structure is 49 ft (15 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCsah 39
CrossesSkunk River
Location0.9 MI W of JCT Csah 23
RouteCounty Highway 39
Coordinates45.98328, -94.08144
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.6 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 25 or greater
Structure length49 ft (15 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,554 (2022)
Projected traffic1,900 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 39 over Skunk River built?

It was built in 1999, making it 26 years old in 2025.

What condition is Csah 39 over Skunk River 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 November 2024.

How much traffic does Csah 39 over Skunk River carry?

About 1,554 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Csah 39 over Skunk River?

The structure is 49 ft (15 m) long with a longest span of 14 ft (4.3 m).

Who owns Csah 39 over Skunk River?

It is owned by the County Highway Agency.