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S. WALNUT ST. over CHRISTINA RIVER

Map

Coordinates:
+39.73516, -75.55107
39°44'07" N, 75°33'04" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:S. WALNUT ST. over CHRISTINA RIVER
Structure number:1687 029
Location:WILMINGTON
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:220.2 ft. [67.1 m]
Total length:640.1 ft. [195.1 m]
Roadway width between curbs:49.9 ft. [15.2 m]
Deck width edge-to-edge:53.2 ft. [16.2 m]
Vertical clearance above deck:19.4 ft. [5.9 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Owner:State Highway Agency [01]
Year built:1957
Year reconstructed:1995
Historic significance:Bridge is eligible for the National Register of Historic Places [2]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Movable - Bascule [16]
Deck type:Open Grating [3]

Latest Available Inspection: March 2018

Good/Fair/Poor Condition:Fair
Status:Posted for load [P]
Average daily traffic:32,098 [as of 2017]
Truck traffic:9% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Satisfactory [6 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 corrrective action [3]
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:In place and functioning [2]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:51.9
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$5,090,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2018FairSatisfactoryFairSatisfactory3209851.9
March 2016FairSatisfactoryFairSatisfactory3131452.0
March 2014FairFairFairSatisfactory1485353.6
March 2012PoorFairSeriousSatisfactory764810.8
April 2010PoorFairSeriousGood145796.0
October 2009PoorFairSeriousGood145796.0
November 2008PoorFairSeriousGood151556.0
November 2007PoorFairSeriousGood155446.0
April 2005FairSatisfactoryFairGood1526953.5
April 2004FairSatisfactoryFairGood2724651.5
May 2002FairSatisfactoryFairGood2779351.5
November 2000FairSatisfactoryFairGood2779351.5
October 1998GoodGoodGoodGood2605763.5
November 1996GoodGoodGoodGood2508663.4
September 1995FairGoodFairSatisfactory2458254.6
June 1991PoorFairPoorGood1847045.2

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Closed Web/Box Girderlinear ft.1125820340
Steel Protective Coatingsq. ft.6,51806,38915114
Steel Girder/Beamlinear ft.3,8002,8407761840
Steel Protective Coatingsq. ft.47,73630,91816,295150373
Steel Stringerlinear ft.4,4461,4232,965580
Steel Protective Coatingsq. ft.26,3006,93214,7414,61512
Deck
Reinforced Concrete Decksq. ft.23,50023,45218300
Wearing Surfacessq. ft.23,50023,4901000
Superstructure
Steel Floor Beamlinear ft.1,0962723554690
Steel Protective Coatingsq. ft.14,2302,1689,1032,715244
Substructure
Reinforced Concrete Pier Walllinear ft.65248415990
Reinforced Concrete Abutmentlinear ft.138138000
Deck
Open Grid Decksq. ft.10,60010,55410360
Steel Protective Coatingsq. ft.10,60010,264030036
Joints
Strip Seal Jointlinear ft.44730514200
Pourable Jointlinear ft.4684490109
Open Jointlinear ft.256249070
Bearings
Elastomeric Bearingeach3632400
Steel Protective Coatingsq. ft.216212400
Movable Bearingeach60461040
Steel Protective Coatingsq. ft.36027660618
Pot Bearingeach1818000
Steel Protective Coatingsq. ft.108108000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.1,7341,65060240
Steel Protective Coatingsq. ft.2,7302,611602138
Reinforced Concrete Bridge Raillinear ft.132132000