BALTIMORE ROAD over ROCK CREEK (Route: 4560)
Num:200000M-0201010x
Open: no restriction [A]
Built: 1911, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Arch - Deck [11]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 18 m = 59.1 ft
Main Spans: 1 at 18 m = 59.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.6 m = 21.7 ft (2 Lanes) and Out-To-Out: 7.3 m = 24.0 ft for a 6.7 m = 22.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Rockville [67675]: Montgomery County [031], Maryland [24]
Owned by County Highway Agency [02], DOT District: 3
0.5 MI S OF JCT SR 28

Condition
Deck: Not Applicable [N]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design:
Operating: 32.7 metric ton = 36.0 tons ()
Inventory: 32.7 metric ton = 36.0 tons ()

Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Better than present minimum criteria [7] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: July 1999 [799] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 10493 (2019) and Trucks: 3%
Future ADT: 12172 (In 2039 )

MD 28 WB over ROCK CREEK (Route: 28)
Num:100000150092014x
Open: no restriction [A]
Built: 1970, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.5 Kilometers)

Bridge Type
Main Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]

Bridge Dimensions
Length: 97.5 m = 319.9 ft
Main Spans: 4 at 24.4 m = 80.1 ft
Approach Spans: 0
Skew: 25
Width, Roadway: 10.1 m = 33.1 ft (2 Lanes) and Out-To-Out: 11 m = 36.1 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Montgomery County [031], Maryland [24]
Owned by State Highway Agency [01], DOT District: 3
0.31 M E OF AVERY ROAD

Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 99.9 metric ton = 109.9 tons (Load Factor(LF) [1])
Inventory: 58.5 metric ton = 64.4 tons (Load Factor(LF) [1])

Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: June 1999 [699] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.6 km = 0.4 mi
Traffic
ADT: 22460 (2012) and Trucks: 8%
Future ADT: 26952 (In 2032 )

MD 28 EB over ROCK CREEK (Route: 28)
Num:100000150092013x
Open: no restriction [A]
Built: 1970, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.5 Kilometers)

Bridge Type
Main Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]

Bridge Dimensions
Length: 97.5 m = 319.9 ft
Main Spans: 4 at 24.4 m = 80.1 ft
Approach Spans: 0
Skew: 25
Width, Roadway: 10.1 m = 33.1 ft (2 Lanes) and Out-To-Out: 11 m = 36.1 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Montgomery County [031], Maryland [24]
Owned by State Highway Agency [01], DOT District: 3
0.31 M E OF AVERY ROAD

Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 99.9 metric ton = 109.9 tons (Load Factor(LF) [1])
Inventory: 58.5 metric ton = 64.4 tons (Load Factor(LF) [1])

Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: June 1999 [699] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.6 km = 0.4 mi
Traffic
ADT: 21579 (2012) and Trucks: 8%
Future ADT: 25895 (In 2032 )