US Bridges

Mn 47 over Trott Brook

Good

Anoka County, Minnesota · 6.1 MI N of JCT TH 10 · Structure no. 02038

Built
2000
25 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete Continuous
Length
69 ft
3 main spans
Daily traffic
5,800
2020 count
Owner
State
State Highway Agency

About this bridge

Mn 47 over Trott Brook is a concrete continuous slab carrying Mn 47 over Trott Brook in Anoka County, Minnesota. It was built in 2000, so it is 25 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, projected to reach 7,600 by 2040. The structure is 69 ft (21 m) long and 46 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesMn 47
CrossesTrott Brook
Location6.1 MI N of JCT TH 10
RouteState Highway 47
CountyAnoka County
StateMinnesota
Coordinates45.28772, -93.41882
Functional classUrban Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating81.6 US tons
Inventory rating49.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length69 ft (21 m)
Longest span26 ft (8 m)
Deck width46 ft (14 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2020)
Projected traffic7,600 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mn 47 over Trott Brook built?

It was built in 2000, making it 25 years old in 2025.

What condition is Mn 47 over Trott 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 July 2023.

How much traffic does Mn 47 over Trott Brook carry?

About 5,800 vehicles per day (2020 count).

How long is Mn 47 over Trott Brook?

The structure is 69 ft (21 m) long with a longest span of 26 ft (8 m) and a deck 46 ft wide.

Who owns Mn 47 over Trott Brook?

It is owned by the State Highway Agency.