US Bridges

CR 310 over Elbow Creek

Good

St. Louis County, Minnesota · 0.7 MI W of JCT Csah 7 · Structure no. 96876

Built
1991
34 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
135
2019 count
Owner
County
County Highway Agency

About this bridge

CR 310 over Elbow Creek is a concrete culvert carrying CR 310 over Elbow Creek in St. Louis County, Minnesota. It was built in 1991, so it is 34 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 135 vehicles a day, projected to reach 145 by 2039. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCR 310
CrossesElbow Creek
Location0.7 MI W of JCT Csah 7
RouteCounty Highway 310
CountySt. Louis County
StateMinnesota
Coordinates47.38647, -92.6147
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating43.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length30 ft (9.1 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135 (2019)
Projected traffic145 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 310 over Elbow Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is CR 310 over Elbow 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 310 over Elbow Creek carry?

About 135 vehicles per day (2019 count).

How long is CR 310 over Elbow Creek?

The structure is 30 ft (9.1 m) long with a longest span of 12 ft (3.7 m).

Who owns CR 310 over Elbow Creek?

It is owned by the County Highway Agency.