US Bridges

Mn 47 over Csah 10

Fair

Anoka County, Minnesota · 0.4 MI South of JCT TH 6 · Structure no. 9726

Built
1966
59 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
250 ft
4 main spans
Daily traffic
9,201
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 47 over Csah 10 is a steel continuous stringer/multi-beam or girder carrying Mn 47 over Csah 10 in Anoka County, Minnesota. It was built in 1966, so it is 59 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 9,201 vehicles a day, roughly 4% of them trucks, projected to reach 11,200 by 2042. The structure is 250 ft (76.2 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMn 47
CrossesCsah 10
Location0.4 MI South of JCT TH 6
RouteState Highway 47
CountyAnoka County
StateMinnesota
Coordinates45.13568, -93.27011
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 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
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating70.7 US tons
Inventory rating42.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length250 ft (76.2 m)
Longest span66 ft (20.2 m)
Deck width35 ft (10.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,201 (2022)
Projected traffic11,200 by 2042
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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$1,000 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mn 47 over Csah 10 built?

It was built in 1966, making it 59 years old in 2025.

What condition is Mn 47 over Csah 10 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does Mn 47 over Csah 10 carry?

About 9,201 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Mn 47 over Csah 10?

The structure is 250 ft (76.2 m) long with a longest span of 66 ft (20.2 m) and a deck 35 ft wide.

Who owns Mn 47 over Csah 10?

It is owned by the State Highway Agency.