+30.02769, -90.99741
30°01'40" N, 90°59'51" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:LA0070 over SEATRA CANAL
Structure number:610402323004071
Location:3.3 M SW of LA 70&LA 3127
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:5.9 ft. [1.8 m]
Total length:29.9 ft. [9.1 m]
Owner:State Highway Agency [01]
Year built:1977
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:4
Main spans material:Concrete [1]
Main spans design:Culvert [19]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: April 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:10,600 [as of 2015]
Truck traffic:16% of total traffic
Structural appraisal:Better than present minimum criteria [7]
Water adequacy appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Culvert condition:Shrinkage cracks, light scaling and insignificant spalling which does not expose reinforcing steel. Insignificant damage caused by drift with no misalignment and not requiring corrective action. Some minor scouring has occured near curtain walls, wingwalls or pipes. Metal culverts have a smooth symmetrical curvature with superficial corrosion and no pitting. [7]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:80.0

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
April 2017Good7 out of 101060080.0
April 2015Good7 out of 101060080.0
April 2013Good7 out of 101040079.0
May 2011Good7 out of 10990079.0
April 2009Good7 out of 101020079.0
April 2007Good8 out of 10990077.0
April 2005Good8 out of 10950077.0
April 2003Good8 out of 10910077.0
April 2001Good8 out of 10693577.0
April 1999Good8 out of 10693577.0
April 1997Good8 out of 10973477.0
April 1995Good8 out of 10784677.0
April 1993Good8 out of 10537577.0
April 1991Good8 out of 10537577.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Culvertlinear ft.420042000