Bridge Location
County: Ralls
Road: Monkey Run Trail
Feature Crossed: Marble Creek
Other Location Information: Approximately 3.5 miles South of Hannibal, Missouri near the intersection of Highway 79 and Monkey Run Trail
Structure Number or County Bridge Number: Bridge No. 0710001
Bridge Information
Owner: Ralls County
Type: Concrete T-Beam
Length: 46’-11”
Width: 20’
Year Built: 1910
Builder: Portland Cement Company, Ilasco, Missouri (possible)
Current Load Rating: None
History of Modifications, Rehabilitations, etc.: Poor to Fair Original Condition
Contact
Name: Matthew Walker, P.E.
Organization: Hutchison Engineering, Inc.
Address: 8965 Highway 36, Suite 5, Hannibal, Missouri 63401
E-Mail: mwalker@hutchisoneng.com
Phone: (573) 240-9577
Narrative Description
The bridge is a two-span concrete tee beam structure with a cast-in-place concrete deck. The longest span is 23.6 feet with an overall structure length of 46.9 feet. The bridge highlights plainly detailed concrete guardrails and bulkheads. The bridge is eligible for the National Register of Historic Places under Criterion C for engineering, as the earliest example of an uncommon structure type in the State of Missouri, predating standardization by the state highway department.
Ralls County is now accepting proposals for the use-in-place of the bridge or its components (it is not anticipated relocation and reuse, while maintaining its structural integrity, to be a viable option) until Monday, September 1, 2025. A proposal checklist is available MoDOT’s Free Bridges website (http://www.modot.org/freebridges/). Preservation covenants may accompany the bridge.