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PR 31 over BLANCO RIVER

Map

Coordinates:
+18.21717, -65.78228
18°13'02" N, 65°46'56" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:PR 31 over BLANCO RIVER
Structure number:001941
Location:5 KM WEST OF NAGUABO
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:130.3 ft. [39.7 m]
Total length:137.1 ft. [41.8 m]
Roadway width between curbs:18.0 ft. [5.5 m]
Deck width edge-to-edge:22.6 ft. [6.9 m]
Vertical clearance above deck:13.5 ft. [4.1 m]
Owner:State Highway Agency [01]
Year built:1928
Historic significance:Bridge is on the National Register of Historic Places [1]
Main span material:Steel [3]
Main span design:Truss - Thru [10]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: October 2018

Good/Fair/Poor Condition:Poor
Status:Bridge closed to all traffic [K]
Average daily traffic:2,837 [as of 2010]
Truck traffic:4% of total traffic
Deck condition:Poor [4 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Water adequacy appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Basically intolerable requiring high priority of corrrective action [3]
Channel protection:Bank protection has failed. River control devices have been destroyed. Stream bed aggradation, degradation or lateral movement has changed the channel to now threaten the bridge and/or approach roadway. [3]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge with "unknown" foundation that has not been evaluated for scour. [U]
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$119,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2018PoorPoorSatisfactoryFair28370.0
June 2017PoorPoorSeriousFair28370.0
December 2016PoorPoorSeriousFair283720.2
December 2015PoorPoorSeriousFair13040.0
December 2014PoorPoorSeriousFair13040.0
December 2013PoorPoorSeriousFair13040.0
January 2013PoorPoorSeriousFair44000.0
February 2012PoorPoorSeriousFair440018.6
August 2010PoorPoorSeriousFair760017.0
January 2010PoorPoorPoorFair760034.7
November 2007PoorPoorPoorFair310039.7
December 2006PoorPoorPoorFair48003.3
May 2005PoorPoorPoorFair48003.3
July 2001PoorPoorFairFair480019.7
May 1999PoorPoorFairFair790018.3
March 1997PoorPoorFairFair660019.3
January 1995PoorPoorFairFair590023.4
February 1993PoorPoorSeriousFair590011.0
March 1991PoorPoorSeriousFair705013.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Stringerlinear ft.96129839420366
Steel Protective Coatingsq. ft.3,1549801,292667215
Deck
Reinforced Concrete Decksq. ft.2,63701,550915172
Wearing Surfacessq. ft.2,54002,54000
Superstructure
Steel Trusslinear ft.551039014120
Steel Protective Coatingsq. ft.1,80801,28046365
Steel Floor Beamlinear ft.20306812510
Steel Protective Coatingsq. ft.667022640932
Steel Gusset Plateeach160790
Substructure
Reinforced Concrete Abutmentlinear ft.1741611300
Bearings
Movable Bearingeach20020
Fixed Bearingeach20020
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.2760243330