Current Weather Conditions
John A. Weeks III
Saturday, April 13, 2024, 4:09:21 AM CDT
Home Photo Tours Rail Fan 12 Easy Steps
Aviation Spacecraft Highways & Bridges About The Author
Google Search
Maps   Groups   Images   Search
  • 12 Easy Steps
  • Aviation
  • Spacecraft
  • Highways & Bridges
    » Bridge Photography
      - MSP River Bridges
      - C & D Canal
      - Illinois River
      - Minnehaha Creek
      - Minnesota River
      - Mississippi River
        › Lake Itasca Area
        › Bemidji Area
        › Cass Lake - Ball Club
        › Grand Rapids Area
        › Blackberry - Crosby
        › Brainerd Lakes Area
        › Little Falls Area
        › St. Cloud Area
        › North Metro Area
        › Port Of Minneapolis
        › St. Anthony Falls Area
        › Mississippi Rvr Gorge
        › St. Paul Area
        › S St. Paul - Hastings
        › Red Wing - Winona
        › La Crosse Area
        › Lansing - Clinton
        › Quad Cities Area
        › Muscatine - Louisiana
        › St. Louis Area
          · Clark Superbridge
          · Melvin Price L&D
          · Chain Of Rocks Canal
          · New Chain Of Rocks
          · Double Chain Bridge
          · Chain Of Rocks Br
          · Single Chain Bridge
          · Water Intake Houses
          · Dam #27
          · Lock #27
          · Merchants Bridge
          · McKinley Bridge
          · McKinley Br (EB)
          · McKinley Br (WB)
          · Ronald W Reagan Br
          · Martin Luther King
          · Eads Bridge
          · Poplar Street Br
          · Gen D MacArthur Br
          · Jefferson Barracks Br
        › Chester - Cairo
        › Miss - Tenn - Ark
        › Ark - Miss - Louisiana
        › Louisiana Structures
      - Missouri River
      - St. Croix River
      - St. Louis River
      - Wisconsin River
      - Best Miss River Photos
      - Cable Stayed Bridges
      - McGilvray Road Bridges
      - I-35W Bridge Disaster
      - Miscellaneous Bridges
      - Madison County Bridges
      - Hist Br Weekend 2013
    » Road Geek Topics
  • Photo Tours
  • Rail Fan
  • About The Author
Site Search By JRank
Highways, Byways, And Bridge Photography
Lock #27
Mississippi River Lock
Granite City, Illinois

Lock #27

• Structure: Dam #27.
• Location: River Mile 185.5.
• Dam Width: 275 Feet (Estimated).
• River Elevation (Pool): 400 Feet.
• River Elevation (Outflow): 385 Feet.
• Water Fall: 15 Feet.
• Annual Lock Traffic: 8,564 Vessels, 68,351,000 Tons (2005).
• Date Opened: February 7, 1953.
By 1940, the locks and dams from Minneapolis down to Alton, Illinois, were in place and operational. The only challenge to navigation left on the upper Mississippi River was a series of rock ledges and shelves that extended for 17 miles on the north-east side of Saint Louis. Navigation through this area was impossible during lower water, and dangerous during high water.

To solve this problem, the US Army Corps of Engineers designed and built the Chain Of Rocks Canal to bypass this area. A low water dam was built just below the north end of the canal. This ensured that the entrance to the canal had sufficient water depth for tow boats. A lock was installed at the south end of the canal.

The locks were built in the late 1940s and early 1950s, opening in 1953. There is one 1200 foot super-lock, and a standard sized 600 foot lock. The 1200 foot lock allows larger tows to lock in one operation without having to break the tow into multiple pieces. Locks #27 are the busiest locks on the Mississippi River given that they are located south of the convergence with the Missouri River, so these locks handle the combined cargo flow from the Mississippi River, Missouri River, and Illinois River.

At this time, there is no public viewing area to see Lock #27. The west side is a national wildlife refuge that is closed to motor vehicles. The east side approach road is fenced off, the river front area is all private property, and the south flank is part of a military installation. As a result, the best photos possible at this time are glimpses taken with a telephoto lens. This situation is ironic because there are signs directing traffic to Lock #27 on highway IL-3 for over a dozen miles when traveling from Alton towards Granite City.

Lock #27
Lock #27

Made With Macintosh
Authored by John A. Weeks III, Copyright © 1996—2016, all rights reserved.
For further information, contact: