US Bridges

Csah 15 over Minnesota River

Fair

Chippewa County, Minnesota · 3.3 MI W of JCT TH 59 · Structure no. 6610

Built
1949
76 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
189 ft
3 main spans
Daily traffic
206
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 15 over Minnesota River is a steel continuous stringer/multi-beam or girder carrying Csah 15 over Minnesota River in Chippewa County, Minnesota. It was built in 1949, so it is 76 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.

It carries about 206 vehicles a day, roughly 10% of them trucks, projected to reach 205 by 2039. The structure is 189 ft (57.6 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCsah 15
CrossesMinnesota River
Location3.3 MI W of JCT TH 59
RouteCounty Highway 15
CountyChippewa County
StateMinnesota
Coordinates44.96069, -95.8108
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length189 ft (57.6 m)
Longest span85 ft (25.9 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic206 (2019)
Projected traffic205 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 15 over Minnesota River built?

It was built in 1949, making it 76 years old in 2025.

What condition is Csah 15 over Minnesota 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 October 2024.

How much traffic does Csah 15 over Minnesota River carry?

About 206 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Csah 15 over Minnesota River?

The structure is 189 ft (57.6 m) long with a longest span of 85 ft (25.9 m) and a deck 35 ft wide.

Who owns Csah 15 over Minnesota River?

It is owned by the County Highway Agency.