New Chain of Rocks Bridge

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New Chain of Rocks Bridge
New Chain of Rocks Bridge.jpg
New Chain of Rocks Bridge, September 2011
Coordinates 38°45′53″N90°10′25″W / 38.76472°N 90.17361°W / 38.76472; -90.17361
Carries4 lanes of I-270.svg I-270
Crosses Mississippi River
Locale Granite City, IL and Bellefontaine Neighbors, MO
Other name(s)I-270 Mississippi River bridge
Maintained by Illinois Department of Transportation
ID number IL 060-0035
Characteristics
DesignGirder
Total length5,411.4 ft (1,649.4 m) [1]
Width54.1 ft (16.5 m)
History
OpenedSeptember 2, 1966;55 years ago (September 2, 1966)
RebuiltCanal bridge: July 11, 2014;8 years ago (July 11, 2014)
Statistics
Daily traffic 51,000 [2]
Location
New Chain of Rocks Bridge
New bridge in foreground, old bridge background Chain of Rocks Bridges 1997.jpg
New bridge in foreground, old bridge background

The New Chain of Rocks Bridge is a pair of bridges across the Mississippi River on the north edge of St. Louis, Missouri. It was constructed in 1966 to bypass the Chain of Rocks Bridge immediately to the south. It originally carried traffic for Bypass US 66 and currently carries traffic for Interstate 270. The bridge opened to traffic on September 2, 1966. [3]

Contents

The original Chain of Rocks Bridge was a narrow bridge with a 22 degree bend midway over the river. Reportedly, two tractor-trailers could not pass each other on that bridge. The Illinois Department of Transportation (IDOT) marks Historic Route 66 over the New Chain of Rocks Bridge (with a "Spur historic route" to the original), but it is only considered a way to make the route continuous.

History

In 1959, proposals first surfaced of a new bridge just to the north of the existing bridge at Chain of Rocks. One of the major opponents to the proposal was Madison mayor Stephen Maeras, [4] as his city owned the existing Chain of Rocks Bridge that was a toll bridge. The proposed 21 feet above the 1844 high-water mark also brought opponents asking the Corps of Engineers to reject the application. [5]

The construction was riddled by various labor and political problems. A death threat to kill a construction supervisor surfaced in July 1965, [6] and by November 1965 the contractor stopped work on the bridge due to the "many troubles". [7] Meanwhile, as the rest of I-270 was open by then, the City of Madison continued to collect toll revenue from the old bridge, averaging $50,000 to $60,000 per month. [8]

The state of Missouri, which was overseeing the construction project, would soon start an investigation as the project was several months behind schedule. The state decided on legal action against the City of Madison in regards to tolls on the old bridge by July 1966, [9] and Madison suspended the tolls on August 2, 1966. [10]

On September 2, 1966 at 1:45 PM (13:45), the bridge was opened to traffic. [3] This moment marked the completion of I-270 in St. Louis (not counting the section that was still marked I-244), and was the first of three interstate highway bridges opened in the St. Louis area.

This opening could not come at a better time for the people in the nearby Alton area, as they were dealing a narrow bridge of their own at the time that had numerous problems and was facing another major closure due to repairs. As a result, any construction work or major accident on either bridge almost always made the Alton Telegraph (with the biggest stories making front page). In 1975, the Clark Bridge closed for major repairs for a six-month period, and traffic was detoured onto this bridge. Many locals refer to it as the I-270 Bridge, to differentiate it from the original Chain of Rocks Bridge, which still stands but is closed to vehicle traffic.

As the truck traffic from the I-70 corridor increased (I-70 thru truckers preferred the I-270 routing through St. Louis due to lower congestion and shorter distances), the Alton area used the 1975 detour as a rallying point in getting the Clark Bridge replaced. Although planning work was being done, there was no funding for that replacement. Meanwhile, the truck traffic was taking a toll on the Chain of Rocks Bridge over both the Mississippi River and Chain of Rocks Canal. Lane restrictions for expansion joint and pavement repairs on both structures was common during the 1980s and 1990s. The river bridge would soon be rated structurally deficient by 1991. [11]

In 1993, the Mississippi River experienced major flooding during the Great Flood of 1993. North of St. Louis, all bridges from the McKinley Bridge up to the Keokuk Bridge were shut down due to flooding at one point or another. The I-270 bridge, despite having lower than normal clearance over the Mississippi River, remained open. The majority of the other bridges that were closed had flooded approaches, however, all of the approaches on I-270 were built on high ground and remained above water. This led to some of the worst traffic delays on the bridge during this time, especially during peak periods at the height of the floods.

On January 4, 1994, the Clark Bridge opened to traffic, giving the Chain of Rocks Bridge much needed relief. During the night of August 10, 1994, two pins supporting an expansion joint failed and caused a section on the Illinois end of the bridge to sink nearly 4 inches, causing 3 of the 4 lanes to close for emergency repairs. [12] For the remainder of that month, various lanes would close due to emergency repairs and inspections and news regarding the emergency repairs frequently made headlines in the Alton Telegraph.

From June 1996 through December 1998, IDOT conducted a major bridge resurfacing project on both the river and canal bridges, with various expansion joints being replaced during this time. IDOT put an 8-6 width and legal weight restriction on the bridge, which forced the majority of trucks to take alternate routes during this time. Traffic would often clog during Friday afternoons while the construction went on. The weight and width restrictions would be lifted after the project concluded.

As traffic demands continue to increase, the lack of shoulders on both the canal and river bridges is starting to prove a safety hazard. The canal bridge would receive a functionally obsolete [13] rating. In addition, with the bridge still being at 4 lanes of traffic, any issue that occurs can cause big problems. On December 8, 2010, a major tractor-trailer accident would close the bridge for 10 hours [14] and paralyze traffic in the Metro-East during the morning peak periods.

I-270 canal bridges used 1966-2014; imploded 2015 I-270canalbridges1964-2015.jpg
I-270 canal bridges used 1966–2014; imploded 2015

Notes

See also

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References

  1. ↑ "New Chain of Rocks Bridge". BridgeHunter.com.[ self-published source ]
  2. ↑ Cousins, Scott (May 5, 2022). "I-270 Bridge Construction Could Begin This Fall". The Telegraph . Alton, Illinois. Retrieved August 30, 2022.
  3. 1 2 "New Bridge Opens at Chain of Rocks". Alton Evening Telegraph . September 3, 1966. pp. 1, 2 . Retrieved August 30, 2022– via Newspapers.com.
  4. ↑ "Protests Expected on Free Bridges". Alton Evening Telegraph. April 14, 1959. p. 1. Retrieved August 30, 2022– via Newspapers.com.
  5. ↑ "Height of Free Bridge Protested at Hearing". Alton Evening Telegraph. July 1, 1959. p. 1. Retrieved August 30, 2022– via Newspapers.com.
  6. ↑ Yakstis, Ande (July 28, 1965). "Police Seek Hoodlum in Death Threat". Alton Evening Telegraph. pp. 1, 2 . Retrieved August 30, 2022– via Newspapers.com.
  7. ↑ "U.S. Frowns at Delay on Bridge". Alton Evening Telegraph. November 29, 1965. pp. 1, 2 . Retrieved August 30, 2022– via Newspapers.com.
  8. ↑ "Tolls Increase as Bridge Project Lags". Alton Evening Telegraph. April 25, 1966. pp. 1, 2 . Retrieved August 30, 2022– via Newspapers.com.
  9. ↑ Kulp, Jim (July 25, 1966). "Maeras Says Bridge Suit Move Unfair". Alton Evening Telegraph. pp. 1, 2 . Retrieved August 30, 2022– via Newspapers.com.
  10. ↑ Yakstis, Ande (August 2, 1966). "Madison Lifts Tolls on Chain of Rocks". Alton Evening Telegraph . pp. 1, 2 . Retrieved August 30, 2022– via Newspapers.com.
  11. ↑ "FAI 270 over Mississippi River, Madison County, Illinois". UglyBridges.com.[ self-published source ]
  12. ↑ Farmer, Jack (August 12, 1994). "I-270 Repairs Send Traffic Streaming to Clark". The Telegraph. Alton. pp. A1–A2. Retrieved August 30, 2022– via Google News Archive Search.
  13. ↑ "IDOT Bridge Information: Canal Bridge".
  14. ↑ Bell, Kim (December 8, 2010). "Fatal Crash on Chain of Rocks Bridge Closes I-270". St. Louis Post-Dispatch.
  15. ↑ Transportation Infrastructure Proposals Archived March 13, 2007, at the Wayback Machine
  16. ↑ "IDOT Proposed Canal Bridge Replacement Plans" (PDF).
  17. ↑ "I-70 Corridor of the Future file 2 of 4" (PDF).
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