3 votes

4th Avenue Bridge


Oblique view of south two trusses

Photo taken by Matthew Lohry in May 2010


BH Photo #166498

Street View 


This bridge is a nicely preserved example of a very early riveted Warren pony truss bridge. What makes this bridge so unique is that it features three trusses, rather than the customary two trusses that most truss bridges have. The bridge's chords are built-up double-flange members, while the diagonals are individual 90-degree angle members that are riveted back-to-back to either side of the chords to form a "T" shape. The bridge lacks lattice and V-lacing entirely. Even though the bridge is mostly covered up with a concrete sidewalk and is filled in underneath, it appears as though it is mostly intact, including the flooring system. It does appear, however, that the bridge had cantilevered sidewalks, but they have been crudely cut off with a cutting torch. This appears to be the only modification, and it is nice to see that most of the structure has been left alone. The bridge has been preserved in its original location, and is now surrounded by condos and landscaped grounds. The area is beautifully finished, and the bridge being in the center of it enhances its surroundings.


Warren Pony truss bridge over abandoned BNSF Railroad on MN 601 (4th Avenue N) in Minneapolis
Minneapolis, Hennepin County, Minnesota
Open to pedestrians only
Built 1891
Warren pony truss with three trusses
Length of largest span: 45.9 ft.
Total length: 47.9 ft.
Deck width: 37.1 ft.
Posted to the National Register of Historic Places
Approximate latitude, longitude
+44.98667, -93.27167   (decimal degrees)
44°59'12" N, 93°16'18" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/478583/4981505 (zone/easting/northing)
Quadrangle map:
Minneapolis South
Inventory numbers
MN L8898 (Minnesota bridge number)
BH 20386 (Bridgehunter.com ID)

Update Log 

  • November 22, 2010: New Street View added by Matthew Lohry
  • May 29, 2010: Updated by Matthew Lohry: Updated bridge design and added description
  • May 12, 2010: Updated by Matthew Lohry: Updated status


  • Matt Lohry


4th Avenue Bridge
Posted May 28, 2011, by John Hill (johnhill_3009 [at] yahoo [dot] com)

I shot many vintage railfan pictures that include this bridge before the railroad track was removed and filled in below. It was nicknamed "Hole In The Wall" by railroaders because of the bridges' north side being aligned with a huge stone retaining wall. 3 selected photo links below are just a few of my available examples.