3 votes

Lower Trenton Bridge (1928)



3/4 View from SW of Free Bridge

Photo by Joseph Elliott, Summer-Fall 1999, for HAER

View photos at Library of Congress

BH Photo #122061

Street Views 


Through truss bridge over Delaware River on Alt US 1 in Morrisville
Morrisville, Bucks County, Pennsylvania, and Mercer County, New Jersey
Open to traffic
Built 1928; rehabilitated 1969 and 2005
- Delaware River Joint Toll Bridge Commission
Warren through truss
Length of largest span: 210.0 ft.
Total length: 1,021.0 ft.
Deck width: 40.0 ft.
Vertical clearance above deck: 16.6 ft.
Eligible for the National Register of Historic Places
Also called
Lower Free Bridge
Warren Street Bridge
Trenton Makes Bridge
Approximate latitude, longitude
+40.21041, -74.76860   (decimal degrees)
40°12'37" N, 74°46'07" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/519691/4451136 (zone/easting/northing)
Quadrangle map:
Trenton West
Average daily traffic (as of 1992)
Inventory numbers
PA 09 7409 9991 0020 (Pennsylvania Bridge Management System number)
BH 30533 (Bridgehunter.com ID)
Inspection report (as of April 2008)
Overall condition: Fair
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 84.2 (out of 100)
View more at BridgeReports.com

Update Log 

  • April 14, 2020: Updated by Nick Boppel: Fix map marker
  • January 27, 2019: New photos from Josh Schmid
  • June 25, 2014: New Street View added by Ralph Demars
  • September 24, 2010: New photos from Ian Anderson
  • May 26, 2010: New Street View added by James Baughn
  • October 30, 2008: Updated by Ian Anderson
  • August 20, 2008: New photos from J.R. Manning

Related Bridges 


  • HAER PA-592 - Lincoln Highway, Running from Philadelphia to Pittsburgh, Fallsington, Bucks County, PA
  • J.R. Manning - thekitchenguy [at] sbcglobal [dot] net
  • Ian Anderson - macsignals [at] gmail [dot] com
  • DRJTBC - Page on the Trenton Makes Bridge
  • Wikipedia
  • Josh Schmid
  • Nick Boppel - nickboppel01 [at] gmail [dot] com


Lower Trenton Bridge
Posted August 4, 2020, by Tony Dillon (spansaver [at] hotmail [dot] com)

The substructure of this bridge indeed dates back to Theodore Burr's 1804 structure.

Lower Trenton Bridge
Posted February 7, 2014, by ArtS (asuckewer [at] knite [dot] com)

According to this article, the piers are 207 years old!


Lower Trenton Bridge
Posted January 23, 2010, by oreo (shydd07 [at] hotmail [dot] com)

who is the archetect and the engineer?thanks

Lower Trenton Bridge
Posted September 22, 2008, by Ian Anderson (macsignals [at] gmail [dot] com)

I have some pictures of this bridge here that can be posted if you like. Also, it should be noted that this bridge used to be four lanes some time ago, two lanes in each truss "barrel." Also, the bridge was just rehabilitated again in 2005, making both directions of traffic to use on barrel at a time. The bridge house has since been replaced too, after a car crashed through the old one.

The bridge is posted at a five ton weight limit, despite its hefty structure compared to other local truss bridges.

Here's the Delaware River Joint Toll Bridge Commission's page on the bridge:


The first picture (7783) is going over the steel girder approach over NJ Route 29, leaving Jersey and going into PA.

The second picture (7784) is going across the first span.

The third picture (7785) is looking upstream between the truss spans at the pedestrian railing and the concrete road barrier. The Calhoun Street Bridge can barely be seen in the background.

The fourth picture (7786) is between the first and second spans, headed into PA.

The last picture (7787) is the portal on the PA side.

Webmaster's note: The photos that were here have been incorporated into the main site.