US Bridges

Mn 68 over Morgan Creek

Fair

Blue Earth County, Minnesota · 0.7 MI W of Cambria · Structure no. 8993

Built
1935
90 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
2,800
2016 count
Owner
State
State Highway Agency

About this bridge

Mn 68 over Morgan Creek is a concrete culvert carrying Mn 68 over Morgan Creek in Blue Earth County, Minnesota. It was built in 1935, so it is 90 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,800 vehicles a day, roughly 6% of them trucks, projected to reach 2,800 by 2036. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesMn 68
CrossesMorgan Creek
Location0.7 MI W of Cambria
RouteState Highway 68
CountyBlue Earth County
StateMinnesota
Coordinates44.24219, -94.32683
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2016)
Projected traffic2,800 by 2036
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$96 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 68 over Morgan Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is Mn 68 over Morgan Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does Mn 68 over Morgan Creek carry?

About 2,800 vehicles per day (2016 count), of which roughly 6% are trucks.

How long is Mn 68 over Morgan Creek?

The structure is 29 ft (8.8 m) long with a longest span of 13 ft (4 m).

Who owns Mn 68 over Morgan Creek?

It is owned by the State Highway Agency.