Bridge Type
Main Span(s): Steel [3] Arch - Thru [12]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:
Bridge Dimensions
Length: 1174.7 m = 3854.2 ft
Main Spans: 5 at 164 m = 538.1 ft
Approach Spans: 24
Skew: 0
Width, Roadway: 14 m = 45.9 ft (4 Lanes) and Out-To-Out: 14.7 m = 48.2 ft for a 13.4 m = 44.0 ft approaching roadway.
Vertical Clearance: 5.11 m = 16.8 ft and Navigational Clearance: 20.1 m = 65.9 ft
Location
Unknown [01827]: Scott County [163], Iowa [19]
Owned by State Highway Agency [01], DOT District: 6
at Davenport
Condition
Deck: Good [7]
Superstructure: Poor [4]
Substructure: Fair [5]
Loading
Design: MS 13.5 / HS 15 [3]
Operating: 35 metric ton = 38.5 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 21.1 metric ton = 23.2 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: July 2020 [0720] and Frequency: 12
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 1.3 km = 0.8 mi
Traffic
ADT: 30600 (2019) and Trucks: 2%
Future ADT: 30600 (In 2040
)