Investigation of cause of cracked stringer on the Blanchette Bridge.

Marianos, W. N.; Chen, Genda; Galati, Nestore; Matta, Fabio; Missouri. Dept. of Transportation

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Investigation of cause of cracked stringer on the Blanchette Bridge.

2006-10-05
By Marianos, W. N. ; Chen, Genda ; Galati, Nestore ; ...

[PDF-1.85 MB]

English

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Creators:

Marianos, W. N. ; Chen, Genda ; Galati, Nestore ; Matta, Fabio

Marianos, W. N. ; Chen, Genda ; Galati, Nestore ; Matta, Fabio Less -
Corporate Creators:

Missouri. Dept. of Transportation
Subject/TRT Terms:

[+]

Cracking Fatigue Cracking Field Tests Stringers Weld Tests
Publication/ Report Number:

OR07.002
Resource Type:

Tech Report
Geographical Coverage:

Missouri
OCLC Number:

668101622
Corporate Publisher:

Missouri. Dept. of Transportation
NTL Classification:

NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures;NTL-HIGHWAY/ROAD TRANSPORTATION-Construction and Maintenance;
Abstract:

The Blanchette Bridge carries Interstate 70 across the Missouri River, connecting St. Louis and St. Charles

counties in eastern Missouri. The westbound bridge was constructed in 1958. In 1979, the original

reinforced concrete roadway deck on the bridge was replaced with a steel grid deck system, welded to

supporting girders and stringers. In 1999 and 2005, cracks were discovered in stringers on the bridge

approach spans. The stringers were repaired with bolted splices.

The investigation of the cracking included preliminary analyses, review of historical documents, detailed

finite element analyses, and field testing of the bridge. The cracking was determined to result from the field

weld detail used combined with the load distribution effects of the stiff grid deck. Recommended mitigation

measures are included.
Format:

PDF
Alternate URL:

http://library.modot.mo.gov/RDT/reports/Ri05036/or07002.pdf
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:fbc6b968ad54673c1d9d7eb1cfed4d98ca16580c7aac91f471a4221e366e712b
Download URL:

https://rosap.ntl.bts.gov/view/dot/17418/dot_17418_DS1.pdf
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Investigation of cause of cracked stringer on the Blanchette Bridge.

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