Mark Twain Memorial Bridge - Hannibal, MO
Posted by: 
YoSam.
N 39° 43.214 W 091° 21.489
15S E 640721 N 4397995
This is the NEW bridge, opened in 2000. The 1936 bridge had the same name.
Waymark Code: WMXG1C
Location: Missouri, United States
Date Posted: 01/08/2018
Views: 2
County of bridge: Marion County, Missouri Side
Location of bridge: I-72 over Mississippi River @ Hannibal
Built: 2000
"This is a surprisingly new steel truss bridge. This river crossing was originally US-36. When the bridge was completed and US-36 was upgraded on the Missouri side, the I-72 designation was extended west about 2 miles into Missouri. It is hoped that I-72 will eventually be constructed across Missouri to Saint Joseph.
"This bridge replaced the previous Mark Twain Memorial Bridge, which was located just downstream. It was also a big metal monster from the depression era. Prior to that bridge, traffic used the Wabash Railroad bridge.
"The next seven photos show a typical crossing of the Mark Twain Memorial Bridge heading east from Missouri into Illinois. The final five photos are shots taken from various different locations around Hannibal.
• Structure ID: NBI 000075015123599.
• Location: River Mile 309.5.
• River Elevation: 460 Feet.
• Highway: I-72, US-36.
• Daily Traffic Count: 11,700 (2003).
• Bridge Type: Steel Truss Through Deck.
• Length: 4,491 Feet Overall, 640 Foot Main Span.
• Width: 86 Feet, 4 Lanes.
• Navigation Channel Width: 640 Feet.
• Height Above Water: 62 Feet.
• Date Built: Opened September 16, 2000.
~ John A. Weeks III