Location: Route 21 and Route 141, Jefferson Cty
Reassurance shield after 141 as Route 21 widens to a divided highway.
Location: Route 21 and Old Route 21, Jefferson Cty
Reassurance shield after the old 21 interchange.
Location: Route 21 and Route M, Jefferson Cty
A few miles later, we’ll approach Route M.
Location: Route 21 and Route M, Jefferson Cty
1/2 mile to M and MM.
Location: Route 21 and Route M, Jefferson Cty
Exit for M and MM. Mmm.
Location: Route 21 and Route M, Jefferson Cty
Reassurance shield after M and MM.
Location: Route 21 and Old Route 21, Jefferson Cty
Reassurance shield after another old 21 interchange.
Location: Route 21 and Old Route 21, Jefferson Cty
Reassurance shield a few miles later, after yet another old 21 interchange. This new divided highway alignment was completed in 2008.
Location: Route 21 and Old Route 21, Jefferson Cty
After the most recent old 21 junction, we’re 4 miles from A and 6 miles from B.
Location: Route 21 and Hayden Rd, Jefferson Cty
Reassurance shield after Hayden Rd.
Location: Route 21 and Route A, Jefferson Cty
Exit for Route A.
Location: Route 21 and Route A, Jefferson Cty
Reassurance shield after A.
Location; Route 21 and Route B, Jefferson Cty
Shortly thereafter, we’ll approach Route B.
Location: Route 21 and Route B, Jefferson Cty
One half mile to Route B.
Location: Route 21 and Route B, Jefferson Cty
Exit for B.
Location: Route 21 and Route B, Jefferson Cty
At Route B, 21 will turn onto its old alignment as the divided highway ends.
Location: Route 21 and Route B, Jefferson Cty
Turn left for 21 south/B west and right for B east.
Location: Route 21 and Route B, Jefferson Cty
As we turn left, we’ll approach the northbound part of the divided highway.
Location: Route 21 and Route B, Jefferson Cty
Follow 21 north back to the Lou.
Location: Route 21 and Route B, Jefferson Cty
Reassurance shield as we finish all that.
Location: Route 21 and Koogler Dr, Hillsboro
Just after the turn, we’ll enter Hillsboro.
Location: Route 21 and Koogler Dr, Hillsboro
At the light, we’ll turn off B and back onto the future Old 21.
Location: Route 21 and Old Route 21, Hillsboro
Turn right to merge back onto the original alignment of 21 south. Route B ends.
Location: Route 21 and Route 110, Jefferson Cty
A couple miles after the turn, we’ll approach Route 110.
Location: Route 21 and Route 110, Jefferson Cty
Turn left for 110 east. This is a different Route 110 than the more recently designated one in the northern part of the state that designates the Chicago-Kansas City Expressway. Not sure why this one wasn’t renumbered.
E to US-67
N to MO-30, S to I-55
