Author: Iowa. Highway Division

Publisher:

Published: 1985

Total Pages: 228

ISBN-13:

This design Study Report presents the investigations made for the replacement of the US 34 MacArthur Bridge over the Mississippi River connecting Burlington, Iowa with Gulfport, Illinois. The study area includes all roadway and structures from Central Avenue in Iowa to the Burlington Northern Railroad bridge in Illinois. The replacement river bridge is set either 75 ft downstream and parallel to the existing structure (South Alignment) or upstream of the facility on a curve (North Alignment). The project is divided into three sections for the study of both alignments. These are the Iowa Approach up to the first land pier for the river bridge, the river bridge from the first land pier in Iowa to the abutment on the river side of the Henderson County Levee, and the Illinois Approach from the river bridge abutment to the Burlington Northern Railroad overpass. The selection of a structural concept for the river bridge has little or no affect on the construction cost of roadway items, demolition and structures for the Iowa or the Illinois Approaches. For the river crossing, four concepts for the channel span--a truss, a tied arch, and cable-stayed girders in steel and in concrete--were investigated for a 480-ft span on the south alignment and a 515-ft span on the north alignment. In addition, cable-stayed girders in steel and concrete were studied for a 660-ft channel span on the south alignment. Multiple girders in steel and prestressed concrete were evaluated for the approaches to these channel span schemes.