US Bridges

Black Locust Drive over Obrian Ditch

Good

Marion County, Indiana · 00.10 S 38th Street · Structure no. 4900685

Built
1995
30 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
38 ft
1 main span
Daily traffic
598
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Black Locust Drive over Obrian Ditch is a concrete culvert carrying Black Locust Drive over Obrian Ditch in Marion County, Indiana. It was built in 1995, so it is 30 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 598 vehicles a day, roughly 5% of them trucks, projected to reach 889 by 2039. The structure is 38 ft (11.5 m) long and 74 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesBlack Locust Drive
CrossesObrian Ditch
Location00.10 S 38th Street
RouteCity Street 0
StateIndiana
Coordinates39.8255, -85.9642
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.7 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length38 ft (11.5 m)
Longest span36 ft (10.9 m)
Deck width74 ft (22.5 m)
Roadway width74 ft (22.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic598 (2019)
Projected traffic889 by 2039
Trucks5%
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 Black Locust Drive over Obrian Ditch built?

It was built in 1995, making it 30 years old in 2025.

What condition is Black Locust Drive over Obrian 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 Black Locust Drive over Obrian Ditch carry?

About 598 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Black Locust Drive over Obrian Ditch?

The structure is 38 ft (11.5 m) long with a longest span of 36 ft (10.9 m) and a deck 74 ft wide.

Who owns Black Locust Drive over Obrian Ditch?

It is owned by the City or Municipal Highway Agency.