Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Open Grating [3] with Wearing Surface:
Bridge Dimensions
Length: 114.3 m = 375.0 ft
Main Spans: 1 at 57.9 m = 190.0 ft
Approach Spans: 2
Skew: 0
Width, Roadway: 13.4 m = 44.0 ft (4 Lanes) and Out-To-Out: 17.5 m = 57.4 ft for a 13.4 m = 44.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 3.9 m = 12.8 ft
Location
Port Huron [65820]: St. Clair County [147], Michigan [26]
Owned by City or Municipal Highway Agency [04], DOT District: 4
IN PORT HURON
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 86.8 metric ton = 95.5 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 52.2 metric ton = 57.4 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
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: 15710 (2017) and Trucks: 8%
Future ADT: 18852 (In 2037
)