US Bridges

T 69 over Ditch

PoorPosted for load

Martin County, Minnesota · 0.1 MI S of JCT TH 4 · Structure no. 932

Built
1914
111 years old
Condition
Poor
inspected September 2024
Type
Girder and Floorbeam System
Concrete
Length
33 ft
1 main span
Daily traffic
24
1988 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 69 over Ditch is a concrete girder and floorbeam system carrying T 69 over Ditch in Martin County, Minnesota. It was built in 1914, so it is 111 years old, older 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. Its operating status is: posted for load restriction.

It carries about 24 vehicles a day, projected to reach 24 by 2029. The structure is 33 ft (10.1 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesT 69
CrossesDitch
Location0.1 MI S of JCT TH 4
RouteCounty Highway 69
Coordinates43.64743, -94.75429
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating27.4 US tons
Inventory rating16.2 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width20 ft (6 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (1988)
Projected traffic24 by 2029
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-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$211 million
NavigationNo navigation control on waterway

Frequently asked questions

When was T 69 over Ditch built?

It was built in 1914, making it 111 years old in 2025.

What condition is T 69 over Ditch 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 September 2024.

How much traffic does T 69 over Ditch carry?

About 24 vehicles per day (1988 count).

How long is T 69 over Ditch?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 20 ft wide.

Who owns T 69 over Ditch?

It is owned by the Town or Township Highway Agency.