US Bridges

Csah 16 over Rock River

Fair

Pipestone County, Minnesota · 0.7 MI S of JCT TH 23 · Structure no. 97116

Built
1990
35 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
135
2020 count
Owner
County
County Highway Agency

About this bridge

Csah 16 over Rock River is a concrete culvert carrying Csah 16 over Rock River 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 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 135 vehicles a day, projected to reach 185 by 2040. The structure is 23 ft (7.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCsah 16
CrossesRock River
Location0.7 MI S of JCT TH 23
RouteCounty Highway 16
CountyPipestone County
StateMinnesota
Coordinates44.07948, -96.18474
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length23 ft (7.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (2020)
Projected traffic185 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 16 over Rock River built?

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

What condition is Csah 16 over Rock 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 August 2024.

How much traffic does Csah 16 over Rock River carry?

About 135 vehicles per day (2020 count).

How long is Csah 16 over Rock River?

The structure is 23 ft (7.1 m) long with a longest span of 10 ft (3 m).

Who owns Csah 16 over Rock River?

It is owned by the County Highway Agency.