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Interstate 465 shield
Interstate 465
Auxiliary route of the Interstate Highway System
Maintained by INDOT
Length: 53 mi[1] (85.30 km)
Formed: 1959 (completed 1970)
Beltway around Indianapolis, Indiana
Indiana roads
< SR 462 I-469 >
Interstates - U.S. Routes - State Roads - Former

Interstate 465 (I-465) is the beltway circling Indianapolis, Indiana, United States. It is roughly rectangular in shape and has a perimeter of approximately 53 miles (85 km). It lies almost completely within the boundaries of Marion County, except for two short sections on the north end in Boone and Hamilton Counties. It crosses I-65, I-69, I-70 and I-74, and provides additional access to I-65 via I-865. An $800 million project is underway to refurbish the western edge of the loop, with an estimated completion in 2014.[2]


Route description

Except for I-65 and I-70, no numbered highways run through downtown Indianapolis. All routes that continue from one side to the other run around the city, concurrent with I-465:

The approximately one-mile section between exits 46 and 47 carries eight routes — I-465, US 31, US 36, US 40, US 52, US 421, SR 37 and SR 67. It may also carry Interstate 69 in the future.

In most cases, markers other than I-74's are not posted along I-465 itself; rather, signs on onramps direct traffic following a particular route to follow I-465 to a particular exit to continue on that route.[5]


Much of I-465 replaced the routing of the defunct parallel State Road 100.

In 2002, the Interstate 865 designation was created from a portion of I-465 to eliminate the three-way intersection of I-465.

Also in 2002, Indianapolis native David Letterman's late-night talk show sidekick and band leader Paul Shaffer was honored by having a street in Thunder Bay, Ontario named for him. This led Letterman to ask (on his program) why he couldn't have his own eponymous road, and he suggested I-465 be named the David Letterman Expressway. His fans took the idea seriously, especially in the Indianapolis area where highway signs promoting the idea were displayed. Advertisers and traffic reports started to refer to I-465 as the "DLX", or later the "David Letterman Bypass", a reference to his quintuple heart bypass surgery in January 2000. Letterman even telephoned the Mayor of Indianapolis, Bart Peterson to make his case, but eventually the idea went nowhere.

In October 22, 2009, a liquid propane tank truck overturned and exploded on the ramp connecting eastbound I-465 to northbound I-69, damaging parts of the heavily-trafficked road in northeastern Indianapolis, including a bridge near the blaze.

Exit list

County Location Mile # Destinations Notes
Marion Indianapolis 2 US 31 south (East Street) West end of US 31 overlap; signed as exits 2A (north) and 2B (south)
4 SR 37 south (Harding Street) West end of SR 37 overlap
7 Mann Road Westbound exit and eastbound entrance
8 SR 67 south (Kentucky Avenue) North end of SR 67 overlap
9 I-70Indianapolis, Terre Haute, St. Louis Signed as exits 9A (east) and 9B (west)
11 Sam Jones Expressway Signed as exits 11A (east) and 11B (west)
12 US 40 west (Washington Street) North end of US 40 overlap; signed as exits 12A (east) and 12B (west)
13 US 36 west (Rockville Road) North end of US 36 overlap; signed as exits 13A (east) and 13B (west)
14 10th Street Signed as exits 14A (east) and 14B (west)
Speedway 16 16A US 136 (Crawfordsville Road)
Indianapolis 16B I-74 west  – Peoria North end of I-74 overlap
17 38th Street
19 56th Street Northbound exit and southbound entrance
20 I-65 north  – Chicago Northbound exit and southbound entrance
20 I-65 south – Indianapolis Southbound exit and northbound entrance
21 71st Street, 73rd Street
23 86th Street
Boone 25 I-865 west (US 52 west) to I-65 north  – Chicago West end of US 52 overlap
Marion Indianapolis 27 US 421 north (Michigan Road) West end of US 421 overlap
Hamilton Carmel 31 US 31 north (Meridian Street) West end of US 31 overlap
Marion Indianapolis 33 Keystone Avenue (Former SR 431)
35 Allisonville Road
37 37A Binford Boulevard – Indianapolis Eastbound exit and westbound entrance
37B I-69 north / SR 37 north – Fort Wayne North end of SR 37 overlap; signed as exit 37 northbound
40 Shadeland Avenue, 56th Street
Lawrence 42 US 36 east (Pendleton Pike) / SR 67 north North end of US 36/SR 67 overlap
Indianapolis 44 I-70Indianapolis, Dayton Signed as exits 44A (west) and 44B (east) northbound
46 US 40 east (Washington Street) North end of US 40 overlap
47 US 52 east (Brookville Road) South end of US 52 overlap
48 Shadeland Avenue Northbound exit and southbound entrance
49 I-74 east (US 421 south) / Southeastern Avenue  – Cincinnati North end of I-74 overlap; south end of US 421 overlap
Beech Grove 52 Emerson Avenue
Indianapolis 53 I-65Indianapolis, Louisville Signed as exits 53A (north) and 53B (south)


  1. ^ Indiana Highway Ends - I-465
  2. ^ Accelerate 465, I-465 expansion project,  
  3. ^ 1969 Indianapolis map (note that the highlighting is wrong, as exit 47 was a partial interchange, so US 52 had to use exit 48 and Shadeland Avenue (State Road 100))
  4. ^ USGS 1984 map
  5. ^ US 31/I-465: Photo shows how US 31 is marked as it joins I-465 (looking east, Illinois and Indiana Highway Ends, ca. 2005),, retrieved 2009-05-17  

External links



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