1 vote

Tilghman Street Viaduct


File:1928 - Tilghman Street Bridge Under Construction

Hellerich, Mahlon H, and Pennsylvania) Lehigh County Historical Society Allentown. Allentown, 17621987 : a 225-year history. Allentown, Pennsylvania: Lehigh County Historical Society, 1987

View this photo at commons.m.wikimedia.org

BH Photo #318192


Open-spandrel arch bridge over Lehigh River on Tilghman Street (PA 1002/Old US 22) in Allentown
Allentown, Lehigh County, Pennsylvania
Open to traffic
Future prospects
Slated for rehabilitation in 2016.
Built 1929; rehabilitated 1995
- Earle W. Meckley (city engineer)
- James B. Long
- Seeds & Derham of Philadelphia, Pennsylvania (contractors)
Open-spandrel arch
Length of largest span: 185.0 ft.
Total length: 1,387.2 ft.
Deck width: 36.1 ft.
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+40.61667, -75.45667   (decimal degrees)
40°37'00" N, 75°27'24" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/461371/4496305 (zone/easting/northing)
Quadrangle map:
Allentown East
Average daily traffic (as of 2018)
Inventory numbers
PA 39 1002 0250 0000 (Pennsylvania Bridge Management System number)
PANBI 23217 (Pennsylvania BRKEY bridge number on the 2011 NBI)
BH 31210 (Bridgehunter.com ID)
Inspection report (as of February 2018)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Fair (5 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 54.7 (out of 100)
View more at BridgeReports.com

Update Log 

  • October 29, 2020: New photos from Patrick Gurwell
  • January 5, 2018: Updated by Royce and Bobette Haley: builders
  • April 13, 2016: New photo from Luke
  • March 15, 2015: Photo imported by Dave King
  • May 8, 2014: Updated by Nathan Holth: Added rehab plans


  • Nathan Holth
  • Luke
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com
  • Patrick Gurwell - pgurwell [at] gmail [dot] com


Tilghman Street Viaduct
Posted February 18, 2017, by Luke
Tilghman Street Viaduct
Posted February 18, 2017, by george oakley (georgeoakley49 [at] yahoo [dot] com)

I don't know if anyone noticed but there is a 4 span truss between the American Parkway and the Lehigh Valley Thruway north of this bridge.Don't know if this is on Bridgehunters.

Tilghman Street Viaduct
Posted February 16, 2017, by Tom Woloszanski (TomWoz1744 [at] gmail [dot] com)

We are currently doing the underground electrical work under and around the Tilghman St. bridge. A conversation arose today about what the bridge might weigh. Any insight on this matter would be appreciated. Thank you