US Bridges

Csah 8 over Ester Brook

Good

Koochiching County, Minnesota · 1.3 MI S of JCT CR 80 · Structure no. 36J19

Built
2017
8 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
27
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 8 over Ester Brook is a concrete culvert carrying Csah 8 over Ester Brook in Koochiching County, Minnesota. It was built in 2017, so it is 8 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 27 vehicles a day, projected to reach 33 by 2036. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 28 mi (45 km).

Location

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CarriesCsah 8
CrossesEster Brook
Location1.3 MI S of JCT CR 80
RouteCounty Highway 8
CountyKoochiching County
StateMinnesota
Coordinates48.28402, -93.44372
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 inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27 (2016)
Projected traffic33 by 2036
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 8 over Ester Brook built?

It was built in 2017, making it 8 years old in 2025.

What condition is Csah 8 over Ester Brook 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 8 over Ester Brook carry?

About 27 vehicles per day (2016 count).

How long is Csah 8 over Ester Brook?

The structure is 34 ft (10.4 m) long with a longest span of 16 ft (4.9 m).

Who owns Csah 8 over Ester Brook?

It is owned by the County Highway Agency.