Bridge Type
Main Span(s): Steel [3] Movable - Swing [17]
Approach Span(s): Steel [3] Truss - Thru [10]
Deck: Open Grating [3] with Wearing Surface:
Bridge Dimensions
Length: 564.3 m = 1851.5 ft
Main Spans: 1 at 78.6 m = 257.9 ft
Approach Spans: 7
Skew: 0
Width, Roadway: 7.1 m = 23.3 ft (2 Lanes) and Out-To-Out: 7.7 m = 25.3 ft for a 7.9 m = 25.9 ft approaching roadway.
Vertical Clearance: 3.35 m = 11.0 ft and Navigational Clearance: 7.3 m = 24.0 ft
Location
Rock Island Arsenal [65104]: Rock Island County [161], Illinois [17]
Owned by Army [74], DOT District: 2
ROCK ISLAND ARSENAL
Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 17.8 metric ton = 19.6 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 13.6 metric ton = 15.0 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Basically intolerable requiring high priority of corrrective action [3]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: October 2020 [1020] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 18000 (2020) and Trucks: 2%
Future ADT: 25000 (In 2042
)