US Bridges

Csah 13 over Shell River

Good

Hubbard County, Minnesota · 0.6 MI S of JCT CR 108 · Structure no. 29517

Built
1990
35 years old
Condition
Good
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
103 ft
3 main spans
Daily traffic
342
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 13 over Shell River is a prestressed concrete tee beam carrying Csah 13 over Shell River in Hubbard 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 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 342 vehicles a day, projected to reach 330 by 2042. The structure is 103 ft (31.4 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCsah 13
CrossesShell River
Location0.6 MI S of JCT CR 108
RouteCounty Highway 13
Coordinates46.80728, -94.88924
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating65.9 US tons
Inventory rating39.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length103 ft (31.4 m)
Longest span34 ft (10.5 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic342 (2022)
Projected traffic330 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 13 over Shell River built?

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

What condition is Csah 13 over Shell 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 October 2024.

How much traffic does Csah 13 over Shell River carry?

About 342 vehicles per day (2022 count).

How long is Csah 13 over Shell River?

The structure is 103 ft (31.4 m) long with a longest span of 34 ft (10.5 m) and a deck 40 ft wide.

Who owns Csah 13 over Shell River?

It is owned by the County Highway Agency.