US Bridges

Csah 15 over Seton Channel

Fair

Hennepin County, Minnesota · 1.1 MI E of JCT Csah 110 · Structure no. 27560

Built
1988
37 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
136 ft
3 main spans
Daily traffic
12,903
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 15 over Seton Channel is a steel continuous stringer/multi-beam or girder carrying Csah 15 over Seton Channel in Hennepin County, Minnesota. It was built in 1988, so it is 37 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 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 12,903 vehicles a day, projected to reach 13,300 by 2041. The structure is 136 ft (41.4 m) long and 66 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCsah 15
CrossesSeton Channel
Location1.1 MI E of JCT Csah 110
RouteCounty Highway 15
CountyHennepin County
StateMinnesota
Coordinates44.93693, -93.64468
Functional classUrban Minor Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.7 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length136 ft (41.4 m)
Longest span52 ft (15.9 m)
Deck width66 ft (20.2 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,903 (2021)
Projected traffic13,300 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 15 over Seton Channel built?

It was built in 1988, making it 37 years old in 2025.

What condition is Csah 15 over Seton Channel 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 June 2023.

How much traffic does Csah 15 over Seton Channel carry?

About 12,903 vehicles per day (2021 count).

How long is Csah 15 over Seton Channel?

The structure is 136 ft (41.4 m) long with a longest span of 52 ft (15.9 m) and a deck 66 ft wide.

Who owns Csah 15 over Seton Channel?

It is owned by the County Highway Agency.