6 votes

Main Street Bridge


View from southwest

Photo taken by James Baughn

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BH Photo #101648

Street Views 


Vertical lift bridge over St. Johns River on US 1 (Main Street) in Jacksonville
Jacksonville, Duval County, Florida
Open to four-lane traffic
Built 1941 by the Mt. Vernon Bridge Co.
- Mt. Vernon Bridge Co. of Mt. Vernon, Ohio
Vertical lift Warren through truss
Length of largest span: 365.0 ft.
Total length: 1,680.2 ft.
Vertical clearance above deck: 16.0 ft.
Eligible for the National Register of Historic Places
Also called
John T. Alsop, Jr. Bridge (official name)
Approximate latitude, longitude
+30.32203, -81.65851   (decimal degrees)
30°19'19" N, 81°39'31" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/436693/3354653 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2017)
Inventory numbers
FDOT 720022 (Florida Dept. of Transportation bridge number)
BH 12363 (Bridgehunter.com ID)
Inspection report (as of August 2018)
Overall condition: Fair
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 48 (out of 100)
View more at BridgeReports.com

Update Log 

  • November 21, 2018: New photo from Douglas Butler
  • January 9, 2018: New photo from Douglas Butler
  • December 7, 2015: New Street View added by Douglas Butler
  • June 3, 2015: New photo from Royce and Bobette Haley
  • February 19, 2015: Photos imported by Dave King
  • November 24, 2014: Updated by Nathan Holth: NRHP Eligible
  • October 4, 2014: New photo from Douglas Butler
  • February 24, 2014: New photos from Jack Schmidt
  • August 26, 2013: New photo from Douglas Butler
  • August 15, 2013: New photos from Michael Miller
  • March 16, 2011: New photos from Ben Tate
  • May 5, 2010: New Street View added by Nathan Holth
  • July 31, 2006: Posted new photos


  • Wikipedia
  • Nathan Holth
  • Ben Tate - benji5221 [at] yahoo [dot] com
  • Michael Miller - michael_a_miller [at] yahoo [dot] com
  • Douglas Butler
  • Jack Schmidt - jjturtle [at] earthlink [dot] net
  • Historicbridges.org - by Nathan Holth
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com


Main Street Bridge
Posted November 19, 2014, by Nathan Holth (webmaster [at] historicbridges [dot] org)

This bridge is currently undergoing rehabilitation. It is closed to vehicular traffic, but one of the sidewalks remains open to pedestrians.

Main Street Bridge
Posted December 27, 2006, by Jim Miles (JammingATsprintmail [dot] com)

Be careful in driving this bridge as it has been upgraded several times for traction problems when wet. The latest upgrade is ongoing and may have cured the problem, but take it safe driving on your mind.