US Bridges

T 408 over Morgan Creek

Good

Blue Earth County, Minnesota · 0.5 MI NW of JCT CR 103 · Structure no. 07585

Built
2007
18 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
73 ft
1 main span
Daily traffic
49
2007 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 408 over Morgan Creek is a prestressed concrete stringer/multi-beam or girder carrying T 408 over Morgan Creek in Blue Earth County, Minnesota. It was built in 2007, so it is 18 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 49 vehicles a day, projected to reach 49 by 2031. The structure is 73 ft (22.1 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesT 408
CrossesMorgan Creek
Location0.5 MI NW of JCT CR 103
RouteCounty Highway 408
Coordinates44.22437, -94.3273
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating72.2 US tons
Inventory rating40.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length73 ft (22.1 m)
Longest span71 ft (21.5 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49 (2007)
Projected traffic49 by 2031
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 T 408 over Morgan Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is T 408 over Morgan 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 September 2023.

How much traffic does T 408 over Morgan Creek carry?

About 49 vehicles per day (2007 count).

How long is T 408 over Morgan Creek?

The structure is 73 ft (22.1 m) long with a longest span of 71 ft (21.5 m) and a deck 34 ft wide.

Who owns T 408 over Morgan Creek?

It is owned by the Town or Township Highway Agency.