US Bridges

US 231 over Dog Leg Ditch

Fair

Porter County, Indiana · 0.48 N of S JCT SR 2 · Structure no. 080856

Built
1983
42 years old
Condition
Fair
inspected December 2024
Type
Culvert
Steel
Length
33 ft
2 main spans
Daily traffic
8,585
2004 count
Owner
State
State Highway Agency

About this bridge

US 231 over Dog Leg Ditch is a steel culvert carrying US 231 over Dog Leg Ditch in Porter County, Indiana. It was built in 1983, so it is 42 years old, younger than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 8,585 vehicles a day, roughly 10% of them trucks, projected to reach 14,252 by 2030. The structure is 33 ft (10.1 m) long and 44 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesUS 231
CrossesDog Leg Ditch
Location0.48 N of S JCT SR 2
RouteU.S. Route 231
CountyPorter County
StateIndiana
Coordinates41.29634, -87.19971
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.3 US tons
Inventory rating54.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span15 ft (4.7 m)
Deck width44 ft (13.4 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,585 (2004)
Projected traffic14,252 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 231 over Dog Leg Ditch built?

It was built in 1983, making it 42 years old in 2025.

What condition is US 231 over Dog Leg Ditch 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 December 2024.

How much traffic does US 231 over Dog Leg Ditch carry?

About 8,585 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is US 231 over Dog Leg Ditch?

The structure is 33 ft (10.1 m) long with a longest span of 15 ft (4.7 m) and a deck 44 ft wide.

Who owns US 231 over Dog Leg Ditch?

It is owned by the State Highway Agency.