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30TH STREET, N.W. over C&O CANAL

Map

Coordinates:
+38.90408, -77.05913
38°54'15" N, 77°03'33" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:30TH STREET, N.W. over C&O CANAL
Structure number:0005
Location:GEORGETOWN & C&O
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Local (Urban) [19]
Length of largest span:36.1 ft. [11.0 m]
Total length:41.0 ft. [12.5 m]
Roadway width between curbs:13.8 ft. [4.2 m]
Deck width edge-to-edge:28.5 ft. [8.7 m]
Vertical clearance below bridge:9.8 ft. [3.0 m]
Owner:State Highway Agency [01]
Year built:1929
Year reconstructed:2013
Historic significance:Bridge is eligible for the National Register of Historic Places [2]
Design load:MS 18 / HS 20 [5]
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: November 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:1,000 [as of 2007]
Truck traffic:1% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Equal to present desirable criteria [8]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
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 (including piles) on dry land well above flood water elevations. [9]
Operating rating:98.8 tons [89.8 metric tons]
Inventory rating:88.8 tons [80.7 metric tons]
Sufficiency rating:80.9

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
November 201680.9GoodVery GoodVery GoodVery Good-1000
November 201480.9GoodVery GoodVery GoodVery Good-1000

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.330330000
Steel Protective Coatingsq. ft.21,50621,506000
Deck
Reinforced Concrete Decksq. ft.1,1791,179000
Substructure
Masonry Abutmentlinear ft.5858000
Joints
Pourable Jointlinear ft.5858000
Bearings
Movable Bearingeach99000
Steel Protective Coatingsq. ft.10,75310,753000
Fixed Bearingeach99000
Steel Protective Coatingsq. ft.10,75310,753000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.115115000
Steel Protective Coatingsq. ft.21,50621,506000