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MD 320 over SLIGO CREEK

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:MD 320 over SLIGO CREEK
Structure number:100000150051010
Location:0.69 MILE SOUTH OF MD 193
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:20.0 ft. [6.1 m]
Total length:44.9 ft. [13.7 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:52.8 ft. [16.1 m]
Owner:State Highway Agency [01]
Year built:1920
Year reconstructed:1933
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Number of main spans:2
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: October 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:19,392 [as of 2009]
Truck traffic:8% of total traffic
Deck condition:Fair [5 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:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present minimum criteria [6]
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]
Pier/abutment protection:None present but re-evaluation suggested [5]
Scour condition:Countermeasures have been installed to mitigate an existing problem with scour. [7]
Operating rating:85.8 tons [78.0 metric tons]
Inventory rating:51.4 tons [46.7 metric tons]
Sufficiency rating:57.2
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$157,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
October 201557.2FairFairFairSatisfactory-19392
July 201357.2FairFairFairSatisfactory-19392
June 201157.2FairFairFairSatisfactory-19392
May 200956.0FairFairFairSatisfactory-21932
May 200756.0FairFairFairSatisfactory-24750
November 200555.0FairFairFairSatisfactory-24750
November 200365.0FairSatisfactorySatisfactorySatisfactoryFO24750
October 200165.8FairSatisfactorySatisfactorySatisfactoryFO23175
October 199965.8FairSatisfactorySatisfactorySatisfactoryFO23175
October 199765.8FairSatisfactorySatisfactorySatisfactoryFO23175
October 199564.0FairFairSatisfactorySatisfactoryFO26000
October 199384.9FairFairSatisfactorySatisfactory-26000
September 199184.6FairSatisfactorySatisfactorySatisfactory-26000