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Mark Twain Bridge

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Photos 

July 1997 photo

This photo was taken by David Birckhead

Map 

Facts 

Overview
Lost through truss bridge over the Mississippi River on US 36 at Hannibal
Location
Hannibal, Marion County, Missouri, and Pike County, Illinois
Status
Replaced by a new bridge to carry I-72
History
Opened Sept. 4, 1936; tolls removed Oct. 30, 1940; rehabilitated 1982; replaced and demolished 2000
Builders
- Mt. Vernon Bridge Co. of Mt. Vernon, Ohio (Superstructure)
- Sverdrup and Parcel
- Union Bridge Co. (Substructure)
Design
Subdivided Warren continuous through truss
Dimensions
Length of largest span: 626.8 ft.
Total length: 3,507.0 ft. (0.7 mi.)
Deck width: 23.9 ft.
Vertical clearance above deck: 14.2 ft.
Also called
Mark Twain Memorial Bridge (official name)
Hannibal Bridge (common name)
Approximate latitude, longitude
+39.71630, -91.35379   (decimal degrees)
39°42'59" N, 91°21'14" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/641103/4397565 (zone/easting/northing)
Land survey
T. 57 N., R. 4 W., Sec. 21
USGS topographic map
Hannibal East
Inventory numbers
MoDOT K-931A1 (Missouri Dept. of Transportation bridge number)
MoDOT K-931 (Missouri Dept. of Transportation bridge number)
BH 21999 (Bridgehunter.com ID)
Inspection (as of 09/1999)
Deck condition rating: Serious (3 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 8.0 (out of 100)
Average daily traffic (as of 1997)
16,920

Update Log 

  • May 12, 2008: New photos from Historic American Engineering Record
  • May 1, 2006: Posted additional photo from David Birckhead

Sources 

  • David Birckhead
  • HAER MO-77 - Mark Twain Memorial Bridge, Spanning Mississippi River at US Route 36, Hannibal, Marion County, MO