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US 29 over MD 650

Map

Coordinates:
+39.04346, -76.99188
39°02'36" N, 76°59'31" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 29 over MD 650
Structure number:100000150067010
Location:0.35 M S OF STEWART LANE
Purpose:Carries highway over highway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:60.0 ft. [18.3 m]
Total length:205.1 ft. [62.5 m]
Roadway width between curbs:94.2 ft. [28.7 m]
Deck width edge-to-edge:97.1 ft. [29.6 m]
Vertical clearance below bridge:16.1 ft. [4.9 m]
Skew angle:29°
Owner:State Highway Agency [01]
Year built:1957
Year reconstructed:1984
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:4
Main spans material:Steel [3]
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: July 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:61,922 [as of 2009]
Truck traffic:8% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Better than present minimum criteria [7]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge not over waterway. [N]
Operating rating:77.3 tons [70.3 metric tons]
Inventory rating:46.4 tons [42.2 metric tons]
Sufficiency rating:76.7

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201576.7FairSatisfactorySatisfactoryFair-61922
July 201376.7FairSatisfactorySatisfactoryFair-61922
June 201176.7FairSatisfactorySatisfactoryFair-61922
June 200977.4FairSatisfactorySatisfactoryFair-57572
June 200789.4FairSatisfactorySatisfactorySatisfactory-59950
August 200589.4FairSatisfactorySatisfactorySatisfactory-59950
August 200387.2FairGoodSatisfactorySatisfactoryFO59950
August 200186.0FairGoodSatisfactorySatisfactoryFO54450
August 199986.0FairGoodSatisfactorySatisfactoryFO54450
August 199786.0FairGoodSatisfactorySatisfactoryFO54450
August 199586.5FairGoodGoodSatisfactoryFO47650
August 199386.5FairGoodGoodSatisfactoryFO47650
August 199186.5FairGoodSatisfactorySatisfactory-47650

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.3,2953,2494510
Steel Protective Coatingsq. ft.33,19333,1138000
Deck
Reinforced Concrete Decksq. ft.19,90619,8852010
Substructure
Reinforced Concrete Columneach1881000
Reinforced Concrete Abutmentlinear ft.2270217100
Reinforced Concrete Pier Caplinear ft.3339523800
Joints
Compression Jointlinear ft.773770030
Bearings
Movable Bearingeach6400640
Steel Protective Coatingsq. ft.1569232320
Fixed Bearingeach64032320
Steel Protective Coatingsq. ft.64320320
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.41129797170