+31.22459, -93.32885
31°13'29" N, 93°19'44" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US0171 over VERNON LAKE
Structure number:085800250107162
Location:2.09 MI. SOUTH OF LA 111
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:60.0 ft. [18.3 m]
Total length:361.9 ft. [110.3 m]
Roadway width between curbs:28.2 ft. [8.6 m]
Deck width edge-to-edge:33.5 ft. [10.2 m]
Owner:State Highway Agency [01]
Year built:1967
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:6
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: February 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:5,760 [as of 2015]
Truck traffic:28% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge is scour critical; bridge foundations determined to be unstable. [3]
Operating rating:87.8 tons [79.8 metric tons]
Inventory rating:43.9 tons [39.9 metric tons]
Sufficiency rating:77.3
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$1,528,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
February 201677.3FairSatisfactorySatisfactoryGoodFO5760
February 201477.3FairSatisfactorySatisfactoryGoodFO5640
February 201277.4FairSatisfactorySatisfactoryGoodFO5040
February 201077.4FairSatisfactorySatisfactoryGoodFO5160
February 200878.0FairSatisfactorySatisfactoryGoodFO4920
March 200678.0FairSatisfactorySatisfactorySatisfactoryFO4680
March 200478.0FairSatisfactorySatisfactorySatisfactoryFO4620
February 200279.0FairSatisfactorySatisfactorySatisfactoryFO4575
February 200079.0FairSatisfactorySatisfactorySatisfactoryFO7159
April 199879.0FairSatisfactorySatisfactorySatisfactoryFO7159
April 199679.0FairSatisfactorySatisfactorySatisfactoryFO3270
April 199479.0FairSatisfactorySatisfactorySatisfactory-4357
November 199379.0FairSatisfactoryVery GoodSatisfactory-4221
November 199179.0FairSatisfactoryVery GoodSatisfactory-3349

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Prestressed Concrete Girder/Beamlinear ft.1,44001,44000
Reinforced Concrete Decksq. ft.12,12712,127000
Reinforced Concrete Abutmentlinear ft.8686000
Prestressed Concrete Pileeach2525000
Reinforced Concrete Pier Caplinear ft.165016500
Strip Seal Jointlinear ft.294294000
Pourable Jointlinear ft.2828000
Elastomeric Bearingeach4800480
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.740740000