Interstate 270 between Interstate 55 at Mehlville and Interstate 70 at Bridgeton was designated as Interstate 244 until 1974 and also the Circumferential Expressway. It was given the I-244 numbering in the early 1960s to correspond with traffic coming from Interstate 443 and completed in Missouri in 1967.4
Interstate 270 Missouri Guides
- North - Mehlville to Bridgeton
- East - Bridgeton to New Chain of Rocks Bridge
- West - Hazelwood to Bridgeton
- South - Bridgeton to Mehlville
Work upgraded the full-cloverleaf interchange between Interstate 270 and U.S. 40 (Interstate 64) between March 4, 19881 and December 7, 1993. Construction was projected to run for three to four years at a cost of $45-million, but ended a year later at $55.5-million.2 This project was similar to the upgrade at Interstate 70 undertaken in the early 1980s.1
A loop ramp from Interstate 270 north to Missouri 364 (Page Avenue) west (Exit 16) was replaced as part of a $22-million project. Completed July 23, 2011, construction added a new flyover to Page Avenue westbound and expanded I-270 north with an additional lane from Missouri 340 (Olive Boulevard) to Highway 364 west.5 Further north, the interchange at Dorsett Road (Exit 17) was converted to a diverging-diamond at a cost of $10-million by late 2010. This included the replacement of the I-270 overpasses above Dorsett Road.6
Variable speed limits were in use along Interstate 270 for three years to June 2011. Those were amended to become "advisory" speeds after a lukewarm reception by both the general public and law enforcement during their run.7
Expansion of Interstate 270 added a fifth lane northbound between Interstate 44 and Dougherty Ferry Road by December 19, 2012. Southbound grew by a lane during construction in 2013. The $11.2 million project restriped the travel lanes from 12 feet to 11 feet to accommodate the added capacity where rock bluffs and bridge columns prevented an overall widening of the roadway.8
|U.S. 67 (Lindbergh Boulevard) southbound at Interstate 270 east in Hazelwood. 05/04/12|
- "ROAD PROJECT AT 40, I-270 SET TO BEGIN." St. Louis Post-Dispatch, March 13, 1988.
- "GO WEST...: WORK AT I-270, 40 NEARLY DONE." St. Louis Post-Dispatch, December 6, 1993.
- "The flip from I-270 to I-255 is a puzzler - Until the 1970s, the section between Interstate 70 and Interstate 55 was known as Interstate 244." St. Louis Post-Dispatch, March 27, 2011.
- "TWO-MILE STRETCH IN ST. CHARLES PAVED WAY FOR AMERICA'S INTERSTATE SYSTEM - HIGHWAYS SHORTENED DRIVES BUT WEAKENED CITIES." St. Louis Post-Dispatch, December 14, 2003.
- "New I-270 ramp to Page set to open today - It's expected to ease long-standing logjams on northbound freeway." St. Louis Post-Dispatch, July 23, 2011.
- "Traffic to shift at I-270, Dorsett - Detour - Narrow bridge with lower speed limit will likely divert motorists for 60 days, MoDOT says. - New interchange - Diverging-diamond design is first of kind in area; cost estimated at $10 million." St. Louis Post-Dispatch, May 18, 2010.
- "Changeable speed limits on I-270 to be 'advisory' - TRANSPORTATION - ALONG FOR THE RIDE." St. Louis Post-Dispatch, June 12, 2011.
- "Wider stretch on I-270 in works - Extra lanes between I-44 , Manchester will ease rush hour, MoDOT officials say." St. Louis Post-Dispatch, February 28, 2011.
05/04/12 by AARoads
Page Updated 12-11-2014.