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Nearby Bridges in NBI 2021: 3


Cedar Street T-481 over BACK CREEK (Route: 0)
Num:17726x
Bridge closed to all traffic [K]
Built: 1876, Reconstructed: N/A [0000]
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Aluminum: Wrought Iron or Cast Iron [9] Truss - Thru [10]
Approach Span(s): Other [00]
Deck: Open Grating [3] with Wearing Surface: Other [9]
Bridge Dimensions
Length: 36.3 m = 119.1 ft
Main Spans: 1 at 35.7 m = 117.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 4.2 m = 13.8 ft (1 Lanes) and Out-To-Out: 4.6 m = 15.1 ft for a 5.2 m = 17.1 ft approaching roadway.
Vertical Clearance: 6.1 m = 20.0 ft and Navigational Clearance: 0 = N/A
Location
St. Thomas [67400]: Franklin County [055], Pennsylvania [42]
Owned by Town or Township Highway Agency [03], DOT District: 8
BACK CR; WILLIAMSON
Condition
Deck: Fair [5]
Superstructure: Imminent Failure [1]
Substructure: Imminent Failure [1]
Loading
Design: MS 18 / HS 20 [5]
Operating: 20 metric ton = 22.0 tons (Allowable Stress(AS) [2])
Inventory: 8.2 metric ton = 9.0 tons (Allowable Stress(AS) [2])
Appraisal
Structural:
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Meets minimum tolerable limits to be left in place as is [4]
Waterway: Better than present minimum criteria [7] and Bridge foundations determined to be stable for assessed or calculated scour conditions; field review indicates action is required. [4]
Inspections
Date: August 2020 [0820] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 100 (1987) and Trucks: 0%
Future ADT: 0 (In 2038 )
SR 3002 over BACK CREEK (Route: 0)
Num:17535x
Open: no restriction [A]
Built: 1973, Reconstructed: 2010
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] 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: 59.7 m = 195.9 ft
Main Spans: 2 at 27.7 m = 90.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 12.9 m = 42.3 ft (2 Lanes) and Out-To-Out: 13.9 m = 45.6 ft for a 12.8 m = 42.0 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
.5 MI S OF WILLIAMSON
Condition
Deck: Very Good [8]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 77.1 metric ton = 84.8 tons (Load Factor(LF) [1])
Inventory: 20.9 metric ton = 23.0 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Superior to present desirable criteria [9]
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: December 1999 [1299] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.1 km = 0.7 mi
Traffic
ADT: 831 (2019) and Trucks: 3%
Future ADT: 1900 (In 2032 )
SR3002;Williamson over Conococheague Creek (Route: 0)
Num:17536x
Open: no restriction [A]
Built: 1973, Reconstructed: 2013
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.5 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Latex Concrete or similar additive [3]
Bridge Dimensions
Length: 55.5 m = 182.1 ft
Main Spans: 2 at 26.5 m = 86.9 ft
Approach Spans: 0
Skew: 25
Width, Roadway: 12.8 m = 42.0 ft (2 Lanes) and Out-To-Out: 14 m = 45.9 ft for a 12.8 m = 42.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Antrim [02696]: Franklin County [055], Pennsylvania [42]
Owned by State Highway Agency [01], DOT District: 8
0.5 MI.S. OF WILLIAMSON
Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 92.5 metric ton = 101.8 tons (Load Factor(LF) [1])
Inventory: 25.4 metric ton = 27.9 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Superior to present desirable criteria [9]
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: January 2020 [0120] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.1 km = 0.7 mi
Traffic
ADT: 831 (2019) and Trucks: 3%
Future ADT: 1900 (In 2032 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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