US Bridges

Csah 3 over US 10

Good

Benton County, Minnesota · 2.4 MI N of JCT TH 23 · Structure no. 05006

Built
1969
56 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
292 ft
4 main spans
Daily traffic
8,500
2019 count
Owner
State
State Highway Agency

About this bridge

Csah 3 over US 10 is a prestressed concrete stringer/multi-beam or girder carrying Csah 3 over US 10 in Benton County, Minnesota. It was built in 1969, so it is 56 years old, older 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 8,500 vehicles a day, projected to reach 8,900 by 2039. The structure is 292 ft (88.9 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCsah 3
CrossesUS 10
Location2.4 MI N of JCT TH 23
RouteCounty Highway 3
Coordinates45.59848, -94.14878
Functional classUrban Minor Arterial

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.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.4 US tons
Inventory rating23.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length292 ft (88.9 m)
Longest span86 ft (26.3 m)
Deck width49 ft (14.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,500 (2019)
Projected traffic8,900 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Csah 3 over US 10 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Csah 3 over US 10 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 September 2023.

How much traffic does Csah 3 over US 10 carry?

About 8,500 vehicles per day (2019 count).

How long is Csah 3 over US 10?

The structure is 292 ft (88.9 m) long with a longest span of 86 ft (26.3 m) and a deck 49 ft wide.

Who owns Csah 3 over US 10?

It is owned by the State Highway Agency.