US Bridges

Csah 70 over Jd #1

Good

Polk County, Minnesota · 2.0 MI N of JCT Csah 22 · Structure no. 60560

Built
2012
13 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
145 ft
3 main spans
Daily traffic
102
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 70 over Jd #1 is a prestressed concrete stringer/multi-beam or girder carrying Csah 70 over Jd #1 in Polk County, Minnesota. It was built in 2012, so it is 13 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 102 vehicles a day, projected to reach 95 by 2042. The structure is 145 ft (44.1 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 70
CrossesJd #1
Location2.0 MI N of JCT Csah 22
RouteCounty Highway 70
CountyPolk County
StateMinnesota
Coordinates48.15134, -97.06381
Functional classRural Minor 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 within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.5 US tons
Inventory rating50.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length145 ft (44.1 m)
Longest span55 ft (16.9 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic102 (2022)
Projected traffic95 by 2042
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 70 over Jd #1 built?

It was built in 2012, making it 13 years old in 2025.

What condition is Csah 70 over Jd #1 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 70 over Jd #1 carry?

About 102 vehicles per day (2022 count).

How long is Csah 70 over Jd #1?

The structure is 145 ft (44.1 m) long with a longest span of 55 ft (16.9 m) and a deck 36 ft wide.

Who owns Csah 70 over Jd #1?

It is owned by the County Highway Agency.