US Bridges

Csah 15 over Fish Hook River

Fair

Hubbard County, Minnesota · .3 MI E of JCT TH 71 · Structure no. 29521

Built
2001
24 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
175 ft
3 main spans
Daily traffic
2,870
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 15 over Fish Hook River is a prestressed concrete stringer/multi-beam or girder carrying Csah 15 over Fish Hook River in Hubbard County, Minnesota. It was built in 2001, so it is 24 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 2,870 vehicles a day, projected to reach 2,750 by 2042. The structure is 175 ft (53.3 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCsah 15
CrossesFish Hook River
Location.3 MI E of JCT TH 71
RouteCounty Highway 15
Coordinates46.90721, -95.05112
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.4 US tons
Inventory rating45.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length175 ft (53.3 m)
Longest span57 ft (17.3 m)
Deck width55 ft (16.9 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,870 (2022)
Projected traffic2,750 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Fish Hook River built?

It was built in 2001, making it 24 years old in 2025.

What condition is Csah 15 over Fish Hook 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 Fish Hook River carry?

About 2,870 vehicles per day (2022 count).

How long is Csah 15 over Fish Hook River?

The structure is 175 ft (53.3 m) long with a longest span of 57 ft (17.3 m) and a deck 55 ft wide.

Who owns Csah 15 over Fish Hook River?

It is owned by the County Highway Agency.