Bridge Type
Main Span(s): Prestressed concrete continuous [6] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 400.2 m = 1313.1 ft
Main Spans: 9 at 44.5 m = 146.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 11 m = 36.1 ft (2 Lanes) and Out-To-Out: 13.7 m = 44.9 ft for a 6.7 m = 22.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Milton [50016]: Northumberland County [097], Pennsylvania [42]
Owned by State Highway Agency [01], DOT District: 3
MILTON/ISLAND RIVER BR.
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 72.6 metric ton = 79.9 tons (Load Factor(LF) [1])
Inventory: 13.6 metric ton = 15.0 tons (Load Factor(LF) [1])
Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
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: September 1999 [999] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.8 km = 1.1 mi
Traffic
ADT: 11406 (2021) and Trucks: 4%
Future ADT: 14234 (In 2032
)