US Bridges

Csah 3 over E Br Rat Root River

Good

Koochiching County, Minnesota · 2.7 MI N of JCT TH 53 · Structure no. 91897

Built
1986
39 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
53 ft
3 main spans
Daily traffic
58
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 3 over E Br Rat Root River is a concrete culvert carrying Csah 3 over E Br Rat Root River in Koochiching County, Minnesota. It was built in 1986, so it is 39 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 58 vehicles a day, projected to reach 100 by 2041. The structure is 53 ft (16.2 m) long. If it were closed, the detour would be 9.9 mi (16 km).

CarriesCsah 3
CrossesE Br Rat Root River
Location2.7 MI N of JCT TH 53
RouteCounty Highway 3
Coordinates48.44233, -93.19976
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic58 (2021)
Projected traffic100 by 2041
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 E Br Rat Root River built?

It was built in 1986, making it 39 years old in 2025.

What condition is Csah 3 over E Br Rat 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 August 2024.

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

About 58 vehicles per day (2021 count).

How long is Csah 3 over E Br Rat Root River?

The structure is 53 ft (16.2 m) long with a longest span of 14 ft (4.3 m).

Who owns Csah 3 over E Br Rat Root River?

It is owned by the County Highway Agency.