HistoricBridges.org Menu: HistoricBridges.org Menu:



BridgeSeek

Nearby Bridges in NBI 2021: 1


PA 271 MAPLE AVE over L.CONEMA.RIV;NORFOLK STH (Route: 271)
Num:8504x
Open: no restriction [A]
Built: 1958, Reconstructed: 2013
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Closed Grating [4] with Wearing Surface: Latex Concrete or similar additive [3]
Bridge Dimensions
Length: 284.7 m = 934.1 ft
Main Spans: 2 at 146.3 m = 480.0 ft
Approach Spans: 3
Skew: 0
Width, Roadway: 10.4 m = 34.1 ft (2 Lanes) and Out-To-Out: 13.4 m = 44.0 ft for a 10.4 m = 34.1 ft approaching roadway.
Vertical Clearance: 4.29 m = 14.1 ft and Navigational Clearance: 0 = N/A
Location
Johnstown [38288]: Cambria County [021], Pennsylvania [42]
Owned by Railroad [27], DOT District: 9
0.7 MILE SOUTH OF SR 3029
Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 46.3 metric ton = 50.9 tons (Load Factor(LF) [1])
Inventory: 27.2 metric ton = 29.9 tons (Load Factor(LF) [1])
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 Countermeasures have been installed to mitigate an existing problem with scour. [7]
Inspections
Date: April 2020 [0420] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.6 km = 1.0 mi
Traffic
ADT: 3877 (2020) and Trucks: 5%
Future ADT: 4546 (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.

Divider

Back

Top

Divider

About - Contact

Divider