US Bridges

T 312 over Masten Creek

Poor

Dodge County, Minnesota · 0.2 MI SE of JCT Csah 15 · Structure no. 20547

Built
1988
37 years old
Condition
Poor
inspected July 2024
Type
Culvert
Steel
Length
38 ft
4 main spans
Daily traffic
48
2005 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 312 over Masten Creek is a steel culvert carrying T 312 over Masten Creek in Dodge County, Minnesota. It was built in 1988, so it is 37 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 48 vehicles a day, projected to reach 48 by 2029. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesT 312
CrossesMasten Creek
Location0.2 MI SE of JCT Csah 15
RouteCounty Highway 312
CountyDodge County
StateMinnesota
Coordinates44.05752, -92.72446
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating43.2 US tons
Inventory rating28.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48 (2005)
Projected traffic48 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$260 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was T 312 over Masten Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is T 312 over Masten Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does T 312 over Masten Creek carry?

About 48 vehicles per day (2005 count).

How long is T 312 over Masten Creek?

The structure is 38 ft (11.6 m) long with a longest span of 8 ft (2.4 m).

Who owns T 312 over Masten Creek?

It is owned by the Town or Township Highway Agency.