S-18-29 over EDISTO RIVER


+33.06172, -80.52433
33°03'42" N, 80°31'28" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:S-18-29 over EDISTO RIVER
Structure number:000000000007349
Old structure number:001870002900100 (from 1992 edition)
Location:9 MI SE ST GEORGE
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:29.9 ft. [9.1 m]
Total length:240.2 ft. [73.2 m]
Roadway width between curbs:32.2 ft. [9.8 m]
Deck width edge-to-edge:35.4 ft. [10.8 m]
Owner:State Highway Agency [01]
Year built:1980
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 13.5 / HS 15 [3]
Number of main spans:8
Main spans material:Concrete [1]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: May 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:700 [as of 2017]
Truck traffic:5% 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: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]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:95.9

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2017GoodGoodGoodGood70095.9
May 2015GoodGoodGoodGood55095.4
June 2013GoodGoodGoodGood55095.4
June 2011GoodGoodGoodGood55095.4
July 2009GoodGoodGoodGood50095.5
May 2007GoodGoodGoodGood50095.5
February 2005GoodGoodGoodGood48095.5
January 1999GoodVery GoodVery GoodVery Good65095.4
January 1991GoodVery GoodVery GoodVery Good25095.6

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Prestressed Concrete Columneach5405400
Reinforced Concrete Pier Caplinear ft.319031900
Pourable Jointlinear ft.248024800
Elastomeric Bearingeach90900
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.480048000
Reinforced Concrete Slabsq. ft.8,4968,07142500