Video of driving northbound across two historic truss bridges built in 1934 - the Archer Avenue Bridge over the Cal Sag Channel, and the Kingery Highway Bridge over the Chicago Sanitary and Ship Canal, on Illinois Routes 171 and 83, in the Sag Bridge area of Lemont IL. Fortunately the traffic signal between the two bridges was green.
This classic Pennsylvania through truss bridge is one of the better examples of the type, and is still in good condition carrying heavy traffic on Illinois Routes 83 and 171 over the Calumet Sag Channel. It is a piece of incredibly intricate geometric art that is just plain fun to drive across, especially watching the shadows on its deck on a sunny day.
4-lane wide Pennsylvania through truss with cantilevered sidewalk attached to west side
Length of largest span: 304.3 ft.
Total length: 507.0 ft.
Deck width: 43.9 ft.
Vertical clearance above deck: 15.0 ft.
Eligible for the National Register of Historic Places
Kingery Highway Cal Sag Bridge
Approximate latitude, longitude
+41.69639, -87.93639(decimal degrees) 41°41'47" N, 87°56'11" W (degrees°minutes'seconds")
Approximate UTM coordinates
USGS topographic map
IL 016-0427 (Illinois bridge number)
BH 15139 (Bridgehunter.com ID)
Inspection (as of 08/2011)
Deck condition rating: Good(7 out of 9) Superstructure condition rating: Fair(5 out of 9) Substructure condition rating: Good(7 out of 9) Appraisal: Functionally obsolete
Sufficiency rating: 47.8 (out of 100)
Average daily traffic (as of 2011)
June 3, 2013: Updated by Roger Deschner: Added video, photos, street view
March 28, 2013: New photos from Roger Deschner
March 27, 2013: Updated by Roger Deschner: Correct name, add Description, other details
September 26, 2012: Updated by Steve Conro: Corrected town, road name added photo's