US Bridges

Csah 107 over Sturgeon River

Good

St. Louis County, Minnesota · 0.2 MI E of JCT Csah 5 · Structure no. 69542

Built
1995
30 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
220 ft
3 main spans
Daily traffic
30
2011 count
Owner
County
County Highway Agency

About this bridge

Csah 107 over Sturgeon River is a prestressed concrete stringer/multi-beam or girder carrying Csah 107 over Sturgeon River in St. Louis County, Minnesota. It was built in 1995, so it is 30 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 30 vehicles a day, projected to reach 30 by 2039. The structure is 220 ft (67 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCsah 107
CrossesSturgeon River
Location0.2 MI E of JCT Csah 5
RouteCounty Highway 107
Coordinates47.82218, -93.01749
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating45.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length220 ft (67 m)
Longest span71 ft (21.5 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2011)
Projected traffic30 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Csah 107 over Sturgeon River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Csah 107 over Sturgeon 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 October 2023.

How much traffic does Csah 107 over Sturgeon River carry?

About 30 vehicles per day (2011 count).

How long is Csah 107 over Sturgeon River?

The structure is 220 ft (67 m) long with a longest span of 71 ft (21.5 m) and a deck 35 ft wide.

Who owns Csah 107 over Sturgeon River?

It is owned by the County Highway Agency.