Missouri Route 21

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Route 21 marker

Route 21
Tesson Ferry Road
Route information
Maintained by MoDOT
Length: 188 mi (303 km)
Existed: 1922 – present
Major junctions
South end: Arkansas 115.svg Highway 115 at the Arkansas state line
  US 160.svgUS 160 in Doniphan
US 60.svg US 60 near Van Buren
MO-72.svgRoute 72 in Centreville
MO-49.svg Route 49 in Hogan
MO-32.svg Route 32 in Caledonia
MO-47.svg Route 47 in Mineral Point
MO-supp-M.svgMO-supp-MM.svg Route M/Route MM in Barnhart
MO-141.svg Route 141 in Paulina Hills
I-270.svg Interstate 270
US 50.svgUS 61.svgUS 67.svg Lindbergh Boulevard
North end: MO-30.svg Route 30 in Affton
Location
Counties: Ripley, Carter, Reynolds, Iron, Washington, Jefferson, St. Louis
Highway system

Missouri Highways
Supplemental

Route 20 Route 22

Route 21 is a highway in eastern Missouri. Its northern terminus is at Route 30 in Affton. Its southern terminus is at the Arkansas state line (where it continues as Highway 115). In the St. Louis area, it is known as Tesson Ferry Road, which was named after the 19th century proprietor of the ferry across the Meramec River.

The section through northern Jefferson County, Missouri was the site of numerous fatal traffic accidents due to the narrow road being unable to handle increased traffic from "population growth", and was referred to as "Blood Alley" and "Missouri's Most Dangerous Highway" (and was featured in an Reader's Digest article on dangerous roads)[citation needed]. As a result, the road was rerouted and built to freeway standards. Construction to reroute the highway to just south of Hillsboro was completed on December 15, 2008 and Route 21 is currently freeway standard from Route 141 to Highway B. Plans to extend the freeway south to DeSoto have been approved, but funds are lacking to complete this part of the project.[1]

Route 21 from the Meramec River to Route B, along with Route M, make up the Jefferson County Scenic Byway.[2][3]

Major intersections[edit]

County Location Mile km Destinations Notes
Ripley   Hwy. 115 south – Pocahontas Arkansas state line
  Route 142 west – Gatewood south end of Route 142 overlap
  US 160 west – Alton south end of US 160 overlap
Doniphan Route 142 east – Business District north end of Route 142 overlap
  US 160 east – Poplar Bluff north end of US 160 overlap
Carter   US 60 east – Poplar Bluff south end of US 60 overlap
  US 60 west – Van Buren north end of US 60 overlap; south end of Route 34 overlap
Reynolds   Route 34 east – Clearwater Dam, Piedmont north end of Route 34 overlap
Ellington Route 106 west – Owls Bend, Eminence, Business District
  Route 72 west – Bunker south end of Route 72 overlap
  Route 49 north – Black, Oates south end of Route 49 overlap
Iron   Route 49 south – Annapolis north end of Route 49 overlap
Arcadia Route 72 east north end of Route 72 overlap
Pilot Knob Route 221 north
  Route 32 west south end of Route 32 overlap
Washington Caledonia Route 32 east – Bismarck north end of Route 32 overlap
Potosi Route 8 – Potosi, Leadwood
Old Mines Route 47 south – Bonne Terre south end of Route 47 overlap
  Route 47 north – Richwoods north end of Route 47 overlap
Jefferson   Route 110 east
Hillsboro Business 21 south end of Route B overlap
  165 266 Route B north north end of Route B overlap; south end of freeway
Hillsboro 167 269 Route A
  169 272 Hayden Road
  172 277 Old Route 21 - Goldman
  175 282 Old Route 21 / Schenk Road
  177 285 Route MM / Route M – House Springs, Barnhart
  180 290 Old Route 21 - Shady Valley
  184 296 Old Route 21 - Meramec Heights Southbound exit and northbound entrance
  185 298 Route 141 – Arnold
St. Louis   Meramec Bottom Road interchange; north end of freeway
Concord I-270 – Chicago, Memphis I-270 exit 2
US 50 / US 61 / US 67 (Lindbergh Boulevard)
Affton Route 30 (Gravois Road)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Hillsboro Business Spur[edit]


Route 21 Business
Location: Hillsboro, Jefferson County

Business 21 follows the old alignment of Route 21 through the city of Hillsboro. It begins at the intersection of Route 21 and Highway B on the southern edge of the city, and continues north to the intersection of Route A and Old Route 21, where it ends. Business 21 is the only way one can now reach Route BB, as the rerouting of Route 21 bypasses the road.

References[edit]