US Bridges

CR 180 over Bog Creek

Good

St. Louis County, Minnesota · 5.5 MI NE of JCT TH 53 · Structure no. 69A34

Built
2016
9 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
47 ft
1 main span
Daily traffic
195
2019 count
Owner
County
County Highway Agency

About this bridge

CR 180 over Bog Creek is a prestressed concrete stringer/multi-beam or girder carrying CR 180 over Bog Creek in St. Louis County, Minnesota. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 195 vehicles a day, projected to reach 245 by 2039. The structure is 47 ft (14.2 m) long and 35 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

Location

Open in Google Maps
CarriesCR 180
CrossesBog Creek
Location5.5 MI NE of JCT TH 53
RouteCounty Highway 180
CountySt. Louis County
StateMinnesota
Coordinates48.13906, -92.75483
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating65.7 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length47 ft (14.2 m)
Longest span45 ft (13.7 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic195 (2019)
Projected traffic245 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 180 over Bog Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is CR 180 over Bog 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 June 2023.

How much traffic does CR 180 over Bog Creek carry?

About 195 vehicles per day (2019 count).

How long is CR 180 over Bog Creek?

The structure is 47 ft (14.2 m) long with a longest span of 45 ft (13.7 m) and a deck 35 ft wide.

Who owns CR 180 over Bog Creek?

It is owned by the County Highway Agency.