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John A. Weeks III
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Highways, Byways, And Bridge Photography
Blanchette Memorial Bridge
I-70 Missouri River Highway Crossing
Saint Charles, MO

Blanchette Memorial Bridge

Eastbound Span
• Structure ID: NBI: 2784
• Daily Traffic Count: 83,032 (2005)
• Length: 3,792 Feet
• Width: 68 Feet, 5 Traffic Lanes
• Date Built: 1978, Reconstructed 1984
 
Westbound Span
• Structure ID: NBI: 6672
• Daily Traffic Count: 69,559 (2005)
• Length: 4,083 Feet
• Width: 60 Feet, 5 Traffic Lanes
• Date Built: 1958, Reconstructed 1995
 
Statistics Common To Both Spans
• Location: River Mile 29.6
• River Elevation: 426 Feet
• Highway: I-70
• Bridge Type: Twin Continuous Steel Through Truss
• Navigation Channel Width: 400 Feet
• Height Above Water: 66 Feet

Future bridge story...

Update—MO-DOT closed 2 lanes of the older span of the Blanchette Bridge on June 17, 2009, when a large crack was found in one of the cross-beams that supports the deck. A third lane was closed the morning of June 18, 2009. Crews were able to repair the cracked beam during the day, and the bridge was fully open to traffic shortly after 4:00 PM on the afternoon of the 18th.

Update—on the afternoon of July 13, 2009, we learned that for the second time within a month that MO-DOT has temporarily closed three of the five westbound lanes of the Blanchette Bridge due to a cracked beam. This beam is parallel to the beam that was repaired in June.

Update—on March 12, 2010, we once again find that MO-DOT has closed two westbound lanes on the Blanchette Bridge due to structural problems at an expansion joint.

The photo above and next 4 photos show a crossing of the Blanchette Memorial Bridge from the east heading to the west.


Blanchette Memorial Bridge
Blanchette Memorial Bridge
Blanchette Memorial Bridge
Blanchette Memorial Bridge
The 5 photos above show a crossing of the Blanchette Memorial Bridge heading west. The 4 photos below show a river crossing from the west heading east towards Saint Louis.

Blanchette Memorial Bridge
Blanchette Memorial Bridge
Blanchette Memorial Bridge
Blanchette Memorial Bridge

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