Bridge Type
Main Span(s): Prestressed concrete [5] Box Beam or girders - Single or Spread [06]
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: 77.1 m = 253.0 ft
Main Spans: 4 at 18.9 m = 62.0 ft
Approach Spans: 0
Skew: 26
Width, Roadway: 10.4 m = 34.1 ft (2 Lanes) and Out-To-Out: 11.4 m = 37.4 ft for a 10.7 m = 35.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
St. Thomas [67400]: Franklin County [055], Pennsylvania [42]
Owned by State Highway Agency [01], DOT District: 8
1. mi. N. of Williamson
Condition
Deck: Good [7]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 99.9 metric ton = 109.9 tons (Load Factor(LF) [1])
Inventory: 64.4 metric ton = 70.8 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Better than present minimum criteria [7]
Waterway: Better than present minimum criteria [7] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: December 1999 [1299] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.1 km = 0.7 mi
Traffic
ADT: 1299 (2019) and Trucks: 12%
Future ADT: 1588 (In 2032
)
