US Bridges

T 329 over Elm Creek

PoorPosted for load

Martin County, Minnesota · 2.3 MI W of JCT Cr. 107 · Structure no. L7232

Built
1925
100 years old
Condition
Poor
inspected October 2024
Type
Girder and Floorbeam System
Concrete
Length
39 ft
1 main span
Daily traffic
16
1986 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 329 over Elm Creek is a concrete girder and floorbeam system carrying T 329 over Elm Creek in Martin County, Minnesota. It was built in 1925, so it is 100 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 16 vehicles a day, projected to reach 16 by 2029. The structure is 39 ft (12 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT 329
CrossesElm Creek
Location2.3 MI W of JCT Cr. 107
RouteCounty Highway 329
Coordinates43.76161, -94.84019
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.4 US tons
Inventory rating21.6 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length39 ft (12 m)
Longest span35 ft (10.8 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16 (1986)
Projected traffic16 by 2029
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$82 million
NavigationNo navigation control on waterway

Frequently asked questions

When was T 329 over Elm Creek built?

It was built in 1925, making it 100 years old in 2025.

What condition is T 329 over Elm 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 October 2024.

How much traffic does T 329 over Elm Creek carry?

About 16 vehicles per day (1986 count).

How long is T 329 over Elm Creek?

The structure is 39 ft (12 m) long with a longest span of 35 ft (10.8 m) and a deck 20 ft wide.

Who owns T 329 over Elm Creek?

It is owned by the Town or Township Highway Agency.