US Bridges

Lynhurst Drive over Mars Ditch

Good

Marion County, Indiana · 00.30 S I-70 · Structure no. 4900276

Built
1963
62 years old, rebuilt 2020
Condition
Good
inspected July 2024
Type
Slab
Concrete Continuous
Length
78 ft
3 main spans
Daily traffic
15,130
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lynhurst Drive over Mars Ditch is a concrete continuous slab carrying Lynhurst Drive over Mars Ditch in Marion County, Indiana. It was built in 1963 and reconstructed in 2020, so it is 62 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 15,130 vehicles a day, roughly 3% of them trucks, projected to reach 22,480 by 2039. The structure is 78 ft (23.7 m) long and 51 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesLynhurst Drive
CrossesMars Ditch
Location00.30 S I-70
RouteCity Street 889
CountyMarion County
StateIndiana
Coordinates39.72089, -86.25034
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length78 ft (23.7 m)
Longest span27 ft (8.2 m)
Deck width51 ft (15.4 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,130 (2019)
Projected traffic22,480 by 2039
Trucks3%
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

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 Lynhurst Drive over Mars Ditch built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2020.

What condition is Lynhurst Drive 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 Lynhurst Drive over Mars Ditch carry?

About 15,130 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Lynhurst Drive over Mars Ditch?

The structure is 78 ft (23.7 m) long with a longest span of 27 ft (8.2 m) and a deck 51 ft wide.

Who owns Lynhurst Drive over Mars Ditch?

It is owned by the City or Municipal Highway Agency.