US Bridges

Mn 70 over Rock Creek Tributary

Good

Pine County, Minnesota · 2.8 MI NE of Csah 61 · Structure no. 58X03

Built
2015
10 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
3,901
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 70 over Rock Creek Tributary is a concrete culvert carrying Mn 70 over Rock Creek Tributary in Pine County, Minnesota. It was built in 2015, so it is 10 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 3,901 vehicles a day, roughly 7% of them trucks, projected to reach 4,250 by 2042. The structure is 26 ft (7.9 m) long.

CarriesMn 70
CrossesRock Creek Tributary
Location2.8 MI NE of Csah 61
RouteState Highway 70
Coordinates45.77355, -92.91832
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length26 ft (7.9 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 traffic3,901 (2022)
Projected traffic4,250 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 70 over Rock Creek Tributary built?

It was built in 2015, making it 10 years old in 2025.

What condition is Mn 70 over Rock Creek Tributary 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 2024.

How much traffic does Mn 70 over Rock Creek Tributary carry?

About 3,901 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Mn 70 over Rock Creek Tributary?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns Mn 70 over Rock Creek Tributary?

It is owned by the State Highway Agency.