US Bridges

Mn 68 over N Br Yellow Medicine R

Good

Yellow Medicine County, Minnesota · 0.2 MI SE of Porter · Structure no. 87020

Built
1986
39 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
107 ft
2 main spans
Daily traffic
2,050
2021 count
Owner
State
State Highway Agency

About this bridge

Mn 68 over N Br Yellow Medicine R is a steel continuous stringer/multi-beam or girder carrying Mn 68 over N Br Yellow Medicine R in Yellow Medicine County, Minnesota. It was built in 1986, so it is 39 years old, older 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 2,050 vehicles a day, roughly 14% of them trucks, projected to reach 2,100 by 2041. The structure is 107 ft (32.5 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMn 68
CrossesN Br Yellow Medicine R
Location0.2 MI SE of Porter
RouteState Highway 68
Coordinates44.6334, -96.1632
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.7 US tons
Inventory rating36.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length107 ft (32.5 m)
Longest span51 ft (15.5 m)
Deck width50 ft (15.3 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,050 (2021)
Projected traffic2,100 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 68 over N Br Yellow Medicine R built?

It was built in 1986, making it 39 years old in 2025.

What condition is Mn 68 over N Br Yellow Medicine R 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 2024.

How much traffic does Mn 68 over N Br Yellow Medicine R carry?

About 2,050 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is Mn 68 over N Br Yellow Medicine R?

The structure is 107 ft (32.5 m) long with a longest span of 51 ft (15.5 m) and a deck 50 ft wide.

Who owns Mn 68 over N Br Yellow Medicine R?

It is owned by the State Highway Agency.