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Third Street Viaduct


Third Street Highway

January 23, 1953

Missouri State Archives

License: Public domain: Released by author


BH Photo #449555


Harold Bartholomew first envisioned an elevated highway along Third Street in 1928. It took seven years to build the 2.3 mile Third Street Expressway and hundreds of buildings were wiped out. It opened on October 15, 1955. It was later designated to carry I-55. In 2014, I-44 was extended to the new Stan Musial Bridge and it now carries 44 as well. This area underwent significant reconstruction and rehabilitation in 2016-2017 to replace the outmoded ramps to and from the Poplar Street Bridge.


Viaduct carrying I-44 over S. Broadway, 7th St, Park Ave. in downtown St. Louis
Kosciusko, St. Louis, Missouri
Open to traffic
Opened in 1955 carried US 66 1955-1977, major reconstruction 2016-17
Steel stringer
Length of largest span: 140.1 ft.
Total length: 3,175.0 ft. (0.6 mi.)
Deck width: 67.9 ft.
Skew angle
45 degrees
Also called
Third Street Highway Bridge
Approximate latitude, longitude
+38.61458, -90.19462   (decimal degrees)
38°36'52" N, 90°11'41" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/744256/4277740 (zone/easting/northing)
Land survey
T. 45 N., R. 7 E., Sec. 25
Average daily traffic (as of 2016)
Inventory numbers
MONBI 11732 (Missouri bridge number on the National Bridge Inventory)
BH 85495 (Bridgehunter.com ID)
Inspection report (as of September 2017)
Overall condition: Fair
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 89.1 (out of 100)
View more at BridgeReports.com

Update Log 

  • July 1, 2019: New photo from Joe Sonderman
  • June 20, 2019: New photos from Joe Sonderman
  • June 10, 2019: New photos from Joe Sonderman