Bridge Type
Main Span(s): Steel [3] Suspension [13]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Latex Concrete or similar additive [3]
Bridge Dimensions
Length: 3290.6 m = 10796.5 ft
Main Spans: 3 at 655.3 m = 2150.0 ft
Approach Spans: 51
Skew: 0
Width, Roadway: 15.8 m = 51.8 ft (4 Lanes) and Out-To-Out: 17.9 m = 58.7 ft for a 20.7 m = 67.9 ft approaching roadway.
Vertical Clearance: 5.46 m = 17.9 ft and Navigational Clearance: 30.5 m = 100.1 ft
Location
Swanwyck Estates [69780]: New Castle County [003], Delaware [10]
Owned by Local Toll Authority [32], DOT District: 1
NEW CASTLE
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 29.5 metric ton = 32.5 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 22.7 metric ton = 25.0 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: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: April 1999 [499] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.1 km = 0.1 mi
Traffic
ADT: 46830 (2014) and Trucks: 11%
Future ADT: 58206 (In 2037
)