US Bridges

M 1040 over Amity Creek

Good

St. Louis County, Minnesota · 0.4 MI N of JCT Csah 12 · Structure no. 69671

Built
2006
19 years old
Condition
Good
inspected October 2021
Type
Culvert
Concrete
Length
42 ft
1 main span
Daily traffic
114
2006 count
Owner
City
City or Municipal Highway Agency

About this bridge

M 1040 over Amity Creek is a concrete culvert carrying M 1040 over Amity Creek in St. Louis County, Minnesota. It was built in 2006, so it is 19 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 114 vehicles a day, projected to reach 114 by 2030. The structure is 42 ft (12.9 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesM 1040
CrossesAmity Creek
Location0.4 MI N of JCT Csah 12
RouteCity Street 1040
Coordinates46.84425, -92.0102
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 2021
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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating75.6 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length42 ft (12.9 m)
Longest span40 ft (12.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic114 (2006)
Projected traffic114 by 2030
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 M 1040 over Amity Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is M 1040 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 2021.

How much traffic does M 1040 over Amity Creek carry?

About 114 vehicles per day (2006 count).

How long is M 1040 over Amity Creek?

The structure is 42 ft (12.9 m) long with a longest span of 40 ft (12.3 m).

Who owns M 1040 over Amity Creek?

It is owned by the City or Municipal Highway Agency.