+33.17753, -80.80236
33°10'39" N, 80°48'08" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 21 over EDISTO RIVER
Structure number:000000000000004
Old structure number:000520002100100 (from 1992 edition)
Location:.2 MI NW US 21 & SC 61
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:49.9 ft. [15.2 m]
Total length:707.1 ft. [215.5 m]
Roadway width between curbs:27.9 ft. [8.5 m]
Deck width edge-to-edge:30.8 ft. [9.4 m]
Owner:State Highway Agency [01]
Year reconstructed:1955
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:Tee beam [04]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: April 2018

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:1,900 [as of 2017]
Truck traffic:6% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:50.2
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$3,359,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2018PoorGoodPoorPoor190050.2
April 2016PoorGoodPoorPoor165050.2
April 2014PoorGoodPoorPoor150049.0
May 2012PoorGoodPoorPoor145049.0
June 2010PoorGoodPoorPoor150049.0
June 2008PoorGoodPoorPoor190048.6
June 2006PoorGoodPoorPoor165048.8
June 2004PoorGoodFairPoor175048.8
June 1998FairGoodFairSatisfactory165063.4
May 1990FairVery GoodSatisfactorySatisfactory150074.5