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I-77 SBL over CONGAREE RIVER

Map

Coordinates:
+33.93236, -81.01767
33°55'56" N, 81°01'04" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-77 SBL over CONGAREE RIVER
Structure number:000000000007917
Old structure number:003210007730500 (from 1992 edition)
Location:5 MI S COLUMBIA
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:180.1 ft. [54.9 m]
Total length:1306.2 ft. [398.1 m]
Roadway width between curbs:56.1 ft. [17.1 m]
Deck width edge-to-edge:59.4 ft. [18.1 m]
Owner:State Highway Agency [01]
Year built:1985
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:5
Main spans material:Steel continuous [4]
Main spans 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: November 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:41,400 [as of 2017]
Truck traffic:12% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Superior to present desirable criteria [9]
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]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:94.1
Recommended work:Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:$1,443,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
November 2017GoodGoodGoodGood4140094.1
December 2015GoodGoodGoodGood3360094.9
December 2013GoodGoodGoodGood3580094.6
December 2011GoodGoodGoodGood3565094.7
December 2009GoodGoodGoodGood3655094.6
January 2008GoodGoodGoodGood3640094.6
January 2006GoodGoodGoodGood3360094.9
January 2000GoodGoodGoodGood2485096.8

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.9,6469,32603200
Steel Protective Coatingsq. ft.10,75310,753000
Deck
Reinforced Concrete Decksq. ft.77,57671,7555,81650
Substructure
Prestressed Concrete Columneach5252000
Reinforced Concrete Columneach1212000
Reinforced Concrete Pier Caplinear ft.7136941180
Joints
Pourable Jointlinear ft.119690500
Open Jointlinear ft.119119000
Bearings
Movable Bearingeach76621400
Steel Protective Coatingsq. ft.10,75310,753000
Fixed Bearingeach6262000
Steel Protective Coatingsq. ft.10,75310,753000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.2,6122,16944300