US Bridges

Csah 3 over N Br Root River

Good

Olmsted County, Minnesota · 0.8 MI N of JCT Csah 6 · Structure no. 55554

Built
1996
29 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
130 ft
3 main spans
Daily traffic
330
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 3 over N Br Root River is a prestressed concrete stringer/multi-beam or girder carrying Csah 3 over N Br Root River in Olmsted County, Minnesota. It was built in 1996, so it is 29 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 330 vehicles a day, projected to reach 313 by 2038. The structure is 130 ft (39.5 m) long and 39 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesCsah 3
CrossesN Br Root River
Location0.8 MI N of JCT Csah 6
RouteCounty Highway 3
Coordinates43.85065, -92.63761
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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
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 geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.8 US tons
Inventory rating45.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length130 ft (39.5 m)
Longest span43 ft (13.2 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic330 (2018)
Projected traffic313 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 3 over N Br Root River built?

It was built in 1996, making it 29 years old in 2025.

What condition is Csah 3 over N Br Root 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 2023.

How much traffic does Csah 3 over N Br Root River carry?

About 330 vehicles per day (2018 count).

How long is Csah 3 over N Br Root River?

The structure is 130 ft (39.5 m) long with a longest span of 43 ft (13.2 m) and a deck 39 ft wide.

Who owns Csah 3 over N Br Root River?

It is owned by the County Highway Agency.