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Atchafalaya Basin Bridge

St. Martin Parish, Louisiana
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Description 

These twin bridges span the entire Atchafalaya Basin. Built in the early 1970s, these bridges are two of the longest, and most-heavily traversed bridges in the state of Louisiana. NBI has them broken into 4-mile segments; the length in feet is approximate for the entire structure.

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Facts 

Overview
Pair of 16+ mile bridges over the Atchafalaya Basin on I-10
Location
St. Martin Parish, Louisiana
Status
Open to traffic
History
Built 1971
Design
Stringer
Dimensions
Total length: 85,000.0 ft. (16.1 mi.)
Deck width: 40.0 ft.
Approximate latitude, longitude
+30.33230, -91.75897   (decimal degrees)
30°19'56" N, 91°45'32" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/619297/3356260 (zone/easting/northing)
Quadrangle map:
Cecilia
Inventory number
BH 46720 (Bridgehunter.com ID)
Inspection (as of 09/2012)
Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 91.4 (out of 100)
Average daily traffic (as of 2013)
29,280

Categories 

Beam (8,262)
Built 1971 (67)
Built during 1970s (561)
Have street view (16,804)
Interstate 10 (17)
Louisiana (597)
 Open (32,276)
Over a mile long (233)
Owned by state (11,368)
St. Martin Parish, Louisiana (15)
Total length over 2500 feet (710)

Update Log 

  • October 29, 2010: Updated by Cliff Darby: Edited Description
  • October 28, 2010: Updated by Cliff Darby: Updated Information

Sources 

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