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
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 mi km Destinations Notes
Ripley 0.000 0.000 AR 115 south – Pocahontas Arkansas state line
8.578 13.805 Route 142 west – Gatewood Southern end of Route 142 overlap
9.825 15.812 US 160 west – Alton Southern end of US 160 overlap
Doniphan 11.714 18.852 Route 142 east – Business District Northern end of Route 142 overlap
13.677 22.011 US 160 east – Poplar Bluff Northern end of US 160 overlap
Carter 36.031 57.986 US 60 east – Poplar Bluff Southern end of US 60 overlap
45.608 73.399 US 60 west / Route 34 begins – Van Buren Northern end of US 60 overlap; Southern end of Route 34 overlap
Reynolds 48.959 78.792 Route 34 east – Clearwater Dam, Piedmont Northern end of Route 34 overlap
Ellington 65.112 104.788 Route 106 west – Owls Bend, Eminence, Business District
77.088 124.061 Route 72 west – Bunker Southern end of Route 72 overlap
85.027 136.838 Route 49 north – Black, Oates Southern end of Route 49 overlap
Iron 98.252 158.121 Route 49 south – Annapolis Northern end of Route 49 overlap
Arcadia 107.967 173.756 Route 72 east Northern end of Route 72 overlap
Pilot Knob 110.072 177.144 Route 221 north
119.405 192.164 Route 32 west Southern end of Route 32 overlap
Washington Caledonia 123.672 199.031 Route 32 east – Bismarck Northern end of Route 32 overlap
Potosi 135.913 218.731 Route 8 – Potosi, Leadwood
Old Mines 142.085 228.664 Route 47 south – Bonne Terre Southern end of Route 47 overlap
147.011 236.591 Route 47 north – Richwoods Northern end of Route 47 overlap
Washington State Park 149.523 240.634 Route 104 east
150.912 242.869 Route 104 west
Jefferson 161.379 259.714 Route 110 east
Hillsboro 165.177 265.827 Route B begins / Business 21 Southern end of Route B overlap
165.547 266.422 Route B north Northern end of Route B overlap; southern end of freeway
Hillsboro 167.854 270.135 Route A / Business 21
169.236 272.359 Hayden Road
172.575 277.733 Old Route 21 - Goldman
175.162 281.896 Old Route 21 / Schenk Road
177.733 286.034 Route MM / Route M – House Springs, Barnhart
180.341 290.231 Old Route 21 - Shady Valley
184.555 297.012 Old Route 21 - Meramec Heights Southbound exit and northbound entrance
185.469 298.483 Route 141 – Fenton, Arnold
185.864 299.119 Meramec Bottom Road Interchange; northern end of freeway
St. Louis Concord 190.517 306.607 I-270 – Chicago, Memphis I-270 exit 2
191.717 308.539 US 50 / US 61 / US 67 (Lindbergh Boulevard)
Affton 194.126 312.416 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]