US Bridges

Troy Ave over Mars Ditch

Good

Marion County, Indiana · 00.45 E of Lynhurst DR · Structure no. 4900288

Built
1966
59 years old, rebuilt 1991
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
99 ft
3 main spans
Daily traffic
3,674
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Troy Ave over Mars Ditch is a prestressed concrete continuous box beam or girders - single or spread carrying Troy Ave over Mars Ditch in Marion County, Indiana. It was built in 1966 and reconstructed in 1991, so it is 59 years old, older than the Indiana average of 46.6 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 3,674 vehicles a day, roughly 4% of them trucks, projected to reach 5,460 by 2039. The structure is 99 ft (30.1 m) long and 43 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesTroy Ave
CrossesMars Ditch
Location00.45 E of Lynhurst DR
RouteCity Street 92
StateIndiana
Coordinates39.72057, -86.24264
Functional classUrban Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.9 US tons
Inventory rating35.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length99 ft (30.1 m)
Longest span33 ft (10 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,674 (2019)
Projected traffic5,460 by 2039
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Troy Ave over Mars Ditch built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1991.

What condition is Troy Ave over Mars Ditch 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 July 2024.

How much traffic does Troy Ave over Mars Ditch carry?

About 3,674 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Troy Ave over Mars Ditch?

The structure is 99 ft (30.1 m) long with a longest span of 33 ft (10 m) and a deck 43 ft wide.

Who owns Troy Ave over Mars Ditch?

It is owned by the City or Municipal Highway Agency.