Bridge Type
Main Span(s): Steel continuous [4] Truss - Thru [10]
Approach Span(s): Steel continuous [4] Truss - Deck [09]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 698.5 m = 2291.8 ft
Main Spans: 3 at 137.2 m = 450.2 ft
Approach Spans: 12
Skew: 0
Width, Roadway: 8.9 m = 29.2 ft (2 Lanes) and Out-To-Out: 10.1 m = 33.1 ft for a 8.9 m = 29.2 ft approaching roadway.
Vertical Clearance: 5.46 m = 17.9 ft and Navigational Clearance: 18.3 m = 60.0 ft
Location
Winona [71032]: Winona County [169], Minnesota [27]
Owned by State Highway Agency [01], DOT District: 6
2.5 MI N OF JCT TH 61
Condition
Deck: Very Good [8]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: HL93 [A]
Operating: 46.3 metric ton = 50.9 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 35.6 metric ton = 39.2 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Better than present minimum criteria [7]
Waterway: Superior to present desirable criteria [9] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: June 2020 [0620] and Frequency: 12
Future Work
Work Needed:
Bridge Detour: 10.5 km = 6.5 mi
Traffic
ADT: 10105 (2019) and Trucks: 6%
Future ADT: 5052 (In 2039
)