US Bridges

CR 666 over Partridge River

Good

St. Louis County, Minnesota · 1.3 MI NE of JCT Csah 11 · Structure no. 69A86

Built
2023
2 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
89 ft
1 main span
Daily traffic
212
2023 count
Owner
County
County Highway Agency

About this bridge

CR 666 over Partridge River is a prestressed concrete stringer/multi-beam or girder carrying CR 666 over Partridge River in St. Louis County, Minnesota. It was built in 2023, so it is 2 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 212 vehicles a day, projected to reach 233 by 2043. The structure is 89 ft (27.1 m) long and 35 ft wide. If it were closed, the detour would be 123 mi (198 km).

CarriesCR 666
CrossesPartridge River
Location1.3 MI NE of JCT Csah 11
RouteCounty Highway 666
Coordinates47.52718, -92.12271
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 protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
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 alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating44.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length89 ft (27.1 m)
Longest span87 ft (26.4 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic212 (2023)
Projected traffic233 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123 mi (198 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 666 over Partridge River built?

It was built in 2023, making it 2 years old in 2025.

What condition is CR 666 over Partridge River 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 2024.

How much traffic does CR 666 over Partridge River carry?

About 212 vehicles per day (2023 count).

How long is CR 666 over Partridge River?

The structure is 89 ft (27.1 m) long with a longest span of 87 ft (26.4 m) and a deck 35 ft wide.

Who owns CR 666 over Partridge River?

It is owned by the County Highway Agency.