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U.S. ROUTE 301 over POTOMAC RIVER

Charles County, Maryland

Map

Coordinates:
+38.35913, -77.01524
38°21'33" N, 77°00'55" W
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Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:U.S. ROUTE 301 over POTOMAC RIVER
Structure number:300000CHZ301010
Location:ON VIRGINIA LINE
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Tolls:Yes [1]
Length of largest span:799.9 ft. [243.8 m]
Total length:10054.6 ft. [3064.5 m]
Roadway width between curbs:24.6 ft. [7.5 m]
Deck width edge-to-edge:27.9 ft. [8.5 m]
Vertical clearance above deck:15.1 ft. [4.6 m]
Vertical clearance below bridge:134.5 ft. [41.0 m]
Owner:State Toll Authority [31]
Year built:1939
Year reconstructed:1984
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Steel [3]
Main spans design:Truss - Thru [10]
Deck type:Closed Grating [4]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: May 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:17,933 [as of 2017]
Truck traffic:7% 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 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:In place and functioning [2]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:41.0
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$18,439,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2017FairFairFairFair1793341.0
May 2015FairFairFairFair1785046.8
May 2013FairFairFairFair1785046.8
May 2011FairFairFairFair1785046.5
April 2010FairFairSatisfactorySatisfactory1785046.5
March 2009FairFairSatisfactorySatisfactory1227371.2
January 2008FairSatisfactorySatisfactorySatisfactory1227372.2
May 2007GoodGoodGoodGood1227373.2
May 2006GoodGoodGoodGood1227373.2
May 2005GoodGoodGoodGood1227373.2
May 2004GoodGoodGoodGood1227373.2
March 2003GoodGoodGoodGood1227373.2
May 2002GoodGoodGoodGood1227373.2
April 2001GoodGoodGoodGood1227373.2
April 2000GoodGoodGoodGood1227373.2
April 1999GoodGoodGoodGood1227373.2
April 1998GoodGoodGoodGood1227373.2
April 1997GoodGoodGoodGood1227373.2
April 1996GoodGoodGoodGood1227373.2
May 1995GoodGoodGoodGood1227374.0
May 1994GoodGoodGoodGood1227374.0
April 1993FairSatisfactoryGoodGood1227374.0
April 1990GoodVery GoodVery GoodGood1227374.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.14,62812,4621,5366300
Steel Protective Coatingsq. ft.175,132165,6163,290606,166
Steel Stringerlinear ft.44,84928,65615,4677224
Steel Protective Coatingsq. ft.234,160101,89039,28887,0345,948
Deck
Reinforced Concrete Decksq. ft.102,526102,42313900
Wearing Surfacessq. ft.102,526101,737744450
Superstructure
Steel Trusslinear ft.9,1661,6083,4154,1430
Steel Protective Coatingsq. ft.304,427107,20662,143126,3938,685
Steel Floor Beamlinear ft.7,2224,0941,9351,1930
Steel Protective Coatingsq. ft.76,17935,56714,98524,856771
Steel Pin or Pin & Hangar Assemblyeach140735890
Steel Protective Coatingsq. ft.37817120
Steel Gusset Plateeach1,34402481,0960
Steel Protective Coatingsq. ft.24,43413,4141,7619,098161
Substructure
Reinforced Concrete Columneach48136110
Steel Column Tower/Trestlelinear ft.1,063551964160
Steel Protective Coatingsq. ft.76,99657,40515,5523,851188
Reinforced Concrete Pier Walllinear ft.1365716630
Reinforced Concrete Abutmentlinear ft.68581000
Reinforced Concrete Pile Cap/Footinglinear ft.1,3921,390020
Steel Pileeach340340000
Steel Protective Coatingsq. ft.30,57226,8733,69270
Reinforced Concrete Pier Caplinear ft.1,051303717310
Deck
Concrete Filled Grid Decksq. ft.156,13882,23750,20823,6930
Wearing Surfacessq. ft.156,138100,84746,2379,0540
Joints
Compression Jointlinear ft.2,2051,163462412168
Assembly without Seal Jointlinear ft.1252473280
Bearings
Movable Bearingeach10892970
Steel Protective Coatingsq. ft.56443698291
Fixed Bearingeach1479329250
Steel Protective Coatingsq. ft.1,5011,173271543
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.20,08116,7502,9853415