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IS 270 over MIDDLEBROOK ROAD

Map

Coordinates:
+39.17521, -77.24674
39°10'31" N, 77°14'48" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IS 270 over MIDDLEBROOK ROAD
Structure number:100000150042010
Location:0.77 MILE SOUTH OF MD 118
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:140.1 ft. [42.7 m]
Total length:145.0 ft. [44.2 m]
Roadway width between curbs:129.9 ft. [39.6 m]
Deck width edge-to-edge:133.9 ft. [40.8 m]
Vertical clearance below bridge:15.1 ft. [4.6 m]
Skew angle:14°
Owner:State Highway Agency [01]
Year built:1991
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Main span material:Steel [3]
Main span 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:133,720 [as of 2009]
Truck traffic:8% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Superior to present desirable criteria [9]
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:79.9 tons [72.6 metric tons]
Inventory rating:47.9 tons [43.5 metric tons]
Sufficiency rating:83.0

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201583.0FairGoodSatisfactorySatisfactory-133720
July 201383.0FairGoodSatisfactorySatisfactory-133720
June 201183.0FairGoodGoodSatisfactory-133720
June 200991.0FairGoodGoodSatisfactory-13081
June 200783.0FairGoodGoodSatisfactory-119175
August 200583.0FairGoodGoodSatisfactory-119175
August 200381.0FairGoodGoodSatisfactoryFO119175
August 200181.0GoodGoodGoodGoodFO81625
August 199981.0GoodGoodGoodGood-81625
October 199781.0GoodGoodGoodGood-81625
October 199581.0GoodGoodGoodGood-108250
October 199381.0GoodGoodGoodGood-108250
October 199196.0GoodGoodGoodGood--

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.2,4652,26520000
Steel Protective Coatingsq. ft.37,65037,510100400
Deck
Reinforced Concrete Decksq. ft.19,43019,4201000
Substructure
Reinforced Concrete Abutmentlinear ft.2832671600
Joints
Compression Jointlinear ft.26816610020
Bearings
Movable Bearingeach1701340
Steel Protective Coatingsq. ft.70502000
Fixed Bearingeach1701700
Steel Protective Coatingsq. ft.59421700
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.4544163440