Mark Twain Memorial Bridge

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Photo taken by James Baughn

BH Photo #106108

Overview: Through truss bridge over the Mississippi River on I-72/US 36 at Hannibal
Location: Hannibal, Marion County, Missouri, and Pike County, Illinois
Status: Open to four lanes of traffic
History: Opened Sept. 16, 2000
Design: Warren through truss
Dimensions: Length of largest span: 640.1 ft.
Total length: 4,490.3 ft. (0.9 mi.)
Deck width: 81.0 ft.
Vertical clearance above deck: 17.4 ft.
Also called: Mark Twain Memorial Bridge (official name)
Approximate latitude, longitude: +39.72070, -91.35819 (decimal degrees)
39°43'15" N, 91°21'29" W (degrees°minutes'seconds")
Approximate UTM coordinates: 15/640717/4398047 (zone/easting/northing)
Quadrangle map:: Hannibal East
Land survey: T. 57 N., R. 4 W., Sec. 21
Average daily traffic (as of 2015): 15,633
Inventory numbers: MONBI 4076 (Missouri bridge number on the National Bridge Inventory)
BH 21993 (Bridgehunter.com ID)
Inspection report (as of April 2015): Overall condition: Good
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 63.7 (out of 100)
View more at BridgeReports.com