US Bridges

Emerson Ave over Conrail RR

Fair

Marion County, Indiana · 00.25 N of 21st ST · Structure no. 4900256

Built
1973
52 years old, rebuilt 2010
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
148 ft
3 main spans
Daily traffic
29,726
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Emerson Ave over Conrail RR is a prestressed concrete continuous box beam or girders - single or spread carrying Emerson Ave over Conrail RR in Marion County, Indiana. It was built in 1973 and reconstructed in 2010, so it is 52 years old, older 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 5 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 29,726 vehicles a day, roughly 9% of them trucks, projected to reach 44,171 by 2039. The structure is 148 ft (45.2 m) long and 90 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesEmerson Ave
CrossesConrail RR
Location00.25 N of 21st ST
RouteCity Street 0
CountyMarion County
StateIndiana
Coordinates39.7996, -86.0833
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating19.4 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length148 ft (45.2 m)
Longest span49 ft (15 m)
Deck width90 ft (27.4 m)
Roadway width87 ft (26.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,726 (2019)
Projected traffic44,171 by 2039
Trucks9%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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$423,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Emerson Ave over Conrail RR built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2010.

What condition is Emerson Ave over Conrail RR 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 July 2024.

How much traffic does Emerson Ave over Conrail RR carry?

About 29,726 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is Emerson Ave over Conrail RR?

The structure is 148 ft (45.2 m) long with a longest span of 49 ft (15 m) and a deck 90 ft wide.

Who owns Emerson Ave over Conrail RR?

It is owned by the City or Municipal Highway Agency.