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IS 370 EB over IS 370 RAMP 'B'

Montgomery County, Maryland
Source: National Bridge Inventory (1992, 2000, 2010 editions)
Information not verified. Use at your own risk.

Facts 

Name:IS 370 EB over IS 370 RAMP 'B'
Structure number:100000150161010
Location:0.07 MILE WEST OF IS 270
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:149.9 ft. [45.7 m]
Total length:161.1 ft. [49.1 m]
Roadway width between curbs:66.9 ft. [20.4 m]
Deck width edge-to-edge:70.9 ft. [21.6 m]
Vertical clearance below bridge:17.1 ft. [5.2 m]
Skew angle:57°
Owner:State Highway Agency [01]
Year built:1990
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 continuous [4]
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]

2010 Inspection 

Status:Open, no restriction [A]
Average daily traffic:38,191 [as of 2006]
Truck traffic:8% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge not over waterway. [N]
Operating rating:35.6 tons [32.4 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:98.0

2000 Inspection 

Status:Open, no restriction [A]
Average daily traffic:57,100 [as of 1994]
Truck traffic:8% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge not over waterway. [N]
Operating rating:35.6 tons [32.4 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:100.0

1992 Inspection 

Status:Open, no restriction [A]
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:27.7 tons [25.2 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:100.0

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