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US 278 WBL over MACKAY CREEK

Map

Coordinates:
+32.23067, -80.79177
32°13'50" N, 80°47'30" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 278 WBL over MACKAY CREEK
Structure number:000000000007650
Old structure number:000720027840300 (from 1992 edition)
Location:HILTON HEAD ISLAND
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:70.9 ft. [21.6 m]
Total length:2231.1 ft. [680.0 m]
Roadway width between curbs:36.1 ft. [11.0 m]
Deck width edge-to-edge:39.4 ft. [12.0 m]
Vertical clearance below bridge:23.0 ft. [7.0 m]
Owner:State Highway Agency [01]
Year built:1983
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: September 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:28,150 [as of 2017]
Truck traffic:8% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Equal to present minimum criteria [6]
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 (including piles) on dry land well above flood water elevations. [9]
Sufficiency rating:100.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2018FairSatisfactorySatisfactorySatisfactory28150100.0
October 2016FairSatisfactorySatisfactorySatisfactory27350100.0
October 2014FairSatisfactorySatisfactorySatisfactory2610097.6
November 2012FairSatisfactorySatisfactorySatisfactory2495097.7
November 2010FairSatisfactorySatisfactorySatisfactory2380097.8
December 2008FairSatisfactorySatisfactorySatisfactory2395097.8
November 2006FairGoodGoodSatisfactory2500097.7
October 2004GoodGoodGoodGood2550097.6
July 1998GoodVery GoodVery GoodGood1925098.1
September 1990GoodVery GoodVery GoodVery Good1009899.2

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.355035500
Prestressed Concrete Girder/Beamlinear ft.15,12015,120000
Deck
Reinforced Concrete Decksq. ft.87,901087,90100
Substructure
Prestressed Concrete Pileeach400040000
Reinforced Concrete Pier Caplinear ft.2,2062,1640420
Joints
Compression Jointlinear ft.2,1282,128000
Bearings
Movable Bearingeach385385000
Fixed Bearingeach385385000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.4,46204,46200