US Bridges

42nd Street over Mitthoefer Ditch

PoorPosted for load

Marion County, Indiana · 00.30 W of Mitthoeffer RD · Structure no. 4900172

Built
1965
60 years old, rebuilt 1998
Condition
Poor
inspected July 2024
Type
Slab
Concrete Continuous
Length
54 ft
3 main spans
Daily traffic
25,044
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

42nd Street over Mitthoefer Ditch is a concrete continuous slab carrying 42nd Street over Mitthoefer Ditch in Marion County, Indiana. It was built in 1965 and reconstructed in 1998, so it is 60 years old, older than the Indiana average of 46.6 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 25,044 vehicles a day, roughly 5% of them trucks, projected to reach 43,953 by 2043. The structure is 54 ft (16.4 m) long and 47 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Carries42nd Street
CrossesMitthoefer Ditch
Location00.30 W of Mitthoeffer RD
RouteCity Street 0
StateIndiana
Coordinates39.83357, -85.99655
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32 US tons
Inventory rating19.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length54 ft (16.4 m)
Longest span18 ft (5.4 m)
Deck width47 ft (14.2 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,044 (2023)
Projected traffic43,953 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$100,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 42nd Street over Mitthoefer Ditch built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1998.

What condition is 42nd Street over Mitthoefer Ditch 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 July 2024.

How much traffic does 42nd Street over Mitthoefer Ditch carry?

About 25,044 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is 42nd Street over Mitthoefer Ditch?

The structure is 54 ft (16.4 m) long with a longest span of 18 ft (5.4 m) and a deck 47 ft wide.

Who owns 42nd Street over Mitthoefer Ditch?

It is owned by the City or Municipal Highway Agency.