RTE I81 over COUNTY ROAD # 100, ST.LA


+44.30149, -75.98182
44°18'05" N, 75°58'55" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:RTE I81 over COUNTY ROAD # 100, ST.LA
Structure number:000000005523240
Location:2.5 MI.SW OF ALEX. BAY
Purpose:Carries highway and pedestrian walkway over highway and waterway
Route classification:Principal Arterial - Interstate (Rural) [01]
Tolls:Yes [1]
Length of largest span:799.9 ft. [243.8 m]
Total length:4500.2 ft. [1371.6 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:30.5 ft. [9.3 m]
Vertical clearance above deck:16.1 ft. [4.9 m]
Vertical clearance below bridge:147.6 ft. [45.0 m]
Owner:Local Toll Authority [32]
Year built:1938
Year reconstructed:1986
Historic significance:Historical significance is not determinable at this time [4]
Design load:M 18 / H 20 [4]
Number of main spans:3
Main spans material:Steel [3]
Main spans design:Suspension [13]
Deck type:Closed Grating [4]
Wearing surface:Other [9]

Latest Available Inspection: July 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:6,396 [as of 2015]
Truck traffic:32% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Pier/abutment protection:None present but re-evaluation suggested [5]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:42.0
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:$163,848,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2017FairSatisfactoryFairFair639642.0
July 2015FairSatisfactoryFairFair640942.0
July 2013FairSatisfactoryFairFair557142.0
August 2011FairSatisfactoryFairFair560042.0
July 2009FairSatisfactoryFairFair568342.0
July 2007FairSatisfactoryFairFair568342.0
July 2005FairSatisfactoryFairFair590042.0
July 2003FairSatisfactoryFairFair590042.0
June 2001FairSatisfactoryFairFair590042.0
June 1999PoorPoorPoorFair590018.0
June 1997FairSatisfactoryFairFair590039.0
July 1995PoorFairPoorPoor590033.8
August 1993FairFairFairSatisfactory590040.0
September 1991FairVery GoodSatisfactorySatisfactory590048.1

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.9,0008,40060000
Steel Protective Coatingsq. ft.128,844102,40823,1583,078200
Steel Stringerlinear ft.7,5007,500000
Steel Protective Coatingsq. ft.44,23342,9781,25500
Steel Main Cablelinear ft.2,10002,10000
Steel Protective Coatingsq. ft.7,1284,9902,13800
Steel Secondary Cableeach178171070
Steel Protective Coatingsq. ft.2,3991,67972000
Steel Floor Beamlinear ft.17,08516,71936240
Steel Protective Coatingsq. ft.93,03579,69412,61566066
Steel Pin or Pin & Hangar Assemblyeach84400
Steel Gusset Plateeach2822621730
Reinforced Concrete Columneach48433110
Steel Column Tower/Trestlelinear ft.3,4062,838518500
Steel Protective Coatingsq. ft.51,34339,6199,8131,9110
Reinforced Concrete Abutmentlinear ft.4242000
Reinforced Concrete Pier Caplinear ft.5295161300
Concrete Filled Grid Decksq. ft.240,999225,56611,5083,9250
Wearing Surfacessq. ft.162,49897,51832,49032,4900
Strip Seal Jointlinear ft.1890169200
Open Jointlinear ft.522113180
Assembly without Seal Jointlinear ft.7964690
Movable Bearingeach2862200
Steel Protective Coatingsq. ft.32211221000
Fixed Bearingeach92316100
Steel Protective Coatingsq. ft.93543550000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.48,00036,40011,60000
Steel Protective Coatingsq. ft.90,91863,86227,05600