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MD 231 over PATUXENT RIVER

Map

Coordinates:
+38.51485, -76.67430
38°30'53" N, 76°40'27" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:MD 231 over PATUXENT RIVER
Structure number:100000040008010
Location:ON CHARLES CO LINE
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:78.1 ft. [23.8 m]
Total length:3348.3 ft. [1020.5 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:27.2 ft. [8.3 m]
Vertical clearance above deck:16.1 ft. [4.9 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Owner:State Highway Agency [01]
Year built:1952
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Design load:M 18 / H 20 [4]
Number of main spans:2
Main spans material:Steel [3]
Main spans design:Movable - Swing [17]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: March 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:11,931 [as of 2009]
Truck traffic:12% of total traffic
Deck condition:Fair [5 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]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present minimum criteria [6]
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:In place and functioning [2]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:44.8
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$6,010,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2016FairFairFairFair1193144.8
March 2014FairSatisfactoryFairFair1193148.7
March 2012FairSatisfactoryFairFair1193148.5
March 2010FairSatisfactorySatisfactorySatisfactory1193159.5
March 2008FairSatisfactorySatisfactorySatisfactory1227559.5
March 2006FairSatisfactorySatisfactorySatisfactory1067559.5
March 2004FairSatisfactorySatisfactorySatisfactory1067559.5
August 2000FairFairFairSatisfactory1145045.9
June 1999FairFairFairSatisfactory1145045.9
June 1997FairFairFairSatisfactory1145045.9
June 1995FairFairFairSatisfactory2005045.9
June 1993FairFairFairSatisfactory2005045.9
April 1991FairFairSatisfactorySatisfactory1300058.4

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.16,35116,0671711130
Steel Protective Coatingsq. ft.139,322139,22210000
Steel Stringerlinear ft.76731804409
Steel Protective Coatingsq. ft.3,8312,87309580
Deck
Reinforced Concrete Decksq. ft.86,72772,8319,1634,7330
Wearing Surfacessq. ft.76,65667,4489,0991090
Superstructure
Steel Floor Beamlinear ft.551453206711
Steel Protective Coatingsq. ft.4,6094,609000
Substructure
Reinforced Concrete Pier Walllinear ft.8808800
Reinforced Concrete Abutmentlinear ft.5855120
Steel Pileeach3640029965
Reinforced Concrete Pileeach1124159120
Reinforced Concrete Pier Caplinear ft.1,5961,49265327
Deck
Open Grid Decksq. ft.3,1201,937780260143
Steel Protective Coatingsq. ft.8,0044,63903,3650
Concrete Filled Grid Decksq. ft.48033614400
Joints
Pourable Jointlinear ft.950000950
Compression Jointlinear ft.644337048259
Bearings
Movable Bearingeach105504690
Steel Protective Coatingsq. ft.56228102810
Fixed Bearingeach455392123417
Steel Protective Coatingsq. ft.2,5261,26301,2630
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.6,5405,86067640
Steel Protective Coatingsq. ft.30,02428,522001,502
Reinforced Concrete Bridge Raillinear ft.4040000