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Nearby Bridges in NBI 2021: 3


US 15 over POTOMAC RIVER: CSX: C&O (Route: 15)
Num:100000100017010x
Open: no restriction [A]
Built: 1939, Reconstructed: 1996
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 518.2 m = 1700.2 ft
Main Spans: 8 at 51.2 m = 168.0 ft
Approach Spans: 6
Skew: 99
Width, Roadway: 8 m = 26.2 ft (2 Lanes) and Out-To-Out: 9.5 m = 31.2 ft for a 9.8 m = 32.2 ft approaching roadway.
Vertical Clearance: 4.57 m = 15.0 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Frederick County [021], Maryland [24]
Owned by State Highway Agency [01], DOT District: 7
POINT OF ROCKS
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: M 18 / H 20 [4]
Operating: 35.4 metric ton = 38.9 tons (Load Factor(LF) [1])
Inventory: 20.9 metric ton = 23.0 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: October 1999 [1099] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 4 km = 2.5 mi
Traffic
ADT: 20831 (2016) and Trucks: 8%
Future ADT: 28830 (In 2032 )
JAMES MONROE HWY over POTOMAC RVR; CSX; C&O (Route: 15)
Num:11102x
Open: no restriction [A]
Built: 1939, Reconstructed: 1980
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 518.2 m = 1700.2 ft
Main Spans: 8 at 51.2 m = 168.0 ft
Approach Spans: 6
Skew: 99
Width, Roadway: 8 m = 26.2 ft (2 Lanes) and Out-To-Out: 9.5 m = 31.2 ft for a 9.8 m = 32.2 ft approaching roadway.
Vertical Clearance: 4.87 m = 16.0 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Loudoun County [107], Virginia [51]
Owned by State Highway Agency [01], DOT District: 9
00.22FR672VA/00.18TO28MD
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: M 18 / H 20 [4]
Operating: 35.4 metric ton = 38.9 tons (Load Factor(LF) [1])
Inventory: 20.9 metric ton = 23.0 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: October 1999 [1099] and Frequency: 24
Future Work
Work Needed: Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Bridge Detour: 4 km = 2.5 mi
Traffic
ADT: 20831 (2016) and Trucks: 8%
Future ADT: 28830 (In 2032 )
POINT OF ROCKS ROA over C&O CANAL (Route: 223)
Num:3100003P0000000x
Open: no restriction [A]
Built: 1890, Reconstructed: 2004
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.4 Kilometers)

Bridge Type
Main Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface:
Bridge Dimensions
Length: 23.9 m = 78.4 ft
Main Spans: 2 at 12 m = 39.4 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 3.4 m = 11.2 ft (1 Lanes) and Out-To-Out: 3.6 m = 11.8 ft for a 2.7 m = 8.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Frederick County [021], Maryland [24]
Owned by National Park Service [66], DOT District: 0
0.3 MILES FROM POTOMAC RI
Condition
Deck: Good [7]
Superstructure: Very Good [8]
Substructure: Good [7]
Loading
Design:
Operating: 32.7 metric ton = 36.0 tons (Load Factor(LF) [1])
Inventory: 23.2 metric ton = 25.5 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: October 1999 [1099] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 15.9 km = 9.9 mi
Traffic
ADT: 159 (2007) and Trucks: 1%
Future ADT: 175 (In 2027 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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