US Bridges

Csah 37 over Amity Creek

Good

St. Louis County, Minnesota · 0.2 MI N of JCT Csah 10 · Structure no. 97283

Built
2004
21 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
5,800
2015 count
Owner
County
County Highway Agency

About this bridge

Csah 37 over Amity Creek is a concrete culvert carrying Csah 37 over Amity Creek in St. Louis County, Minnesota. It was built in 2004, so it is 21 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 5,800 vehicles a day, roughly 4% of them trucks, projected to reach 5,800 by 2035. The structure is 30 ft (9.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCsah 37
CrossesAmity Creek
Location0.2 MI N of JCT Csah 10
RouteCounty Highway 37
Coordinates46.86403, -92.04797
Functional classUrban 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 2024
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 alignment7: Better than present minimum criteria
Operating rating75.6 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length30 ft (9.2 m)
Longest span12 ft (3.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2015)
Projected traffic5,800 by 2035
Trucks4%
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$1,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 37 over Amity Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Csah 37 over Amity Creek 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 37 over Amity Creek carry?

About 5,800 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is Csah 37 over Amity Creek?

The structure is 30 ft (9.2 m) long with a longest span of 12 ft (3.8 m).

Who owns Csah 37 over Amity Creek?

It is owned by the County Highway Agency.