SILVER LAKE RD. over SILVER LAKE SPILLWY (Route: 442)
Num: 1407 442x
Open: no restriction [A]
Built: 1931, Reconstructed: 1939
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 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: Bituminous [6]

Bridge Dimensions
Length: 6.4 m = 21.0 ft
Main Spans: 1 at 5.8 m = 19.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.1 m = 20.0 ft (2 Lanes) and Out-To-Out: 6.8 m = 22.3 ft for a 5.8 m = 19.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Middletown [47030]: New Castle County [003], Delaware [10]
Owned by State Highway Agency [01], DOT District: 5
S.E. OF MIDDLETOWN

Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design:
Operating: 54.4 metric ton = 59.8 tons ()
Inventory: 32.7 metric ton = 36.0 tons ()

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: Better than present minimum criteria [7] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: April 1999 [499] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.4 km = 0.2 mi
Traffic
ADT: 5758 (2017) and Trucks: 9%
Future ADT: 2267 (In 2037 )

SILVER LAKE RD. over SILVER LAKE SPILLWAY (Route: 442)
Num: 1504 442x
Open: no restriction [A]
Built: 1939, Reconstructed: N/A [0000]
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Culvert [19]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 7.8 m = 25.6 ft
Main Spans: 2 at 3.7 m = 12.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.5 m = 24.6 ft (2 Lanes) and Out-To-Out: 8.2 m = 26.9 ft for a 6.5 m = 21.3 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Middletown [47030]: New Castle County [003], Delaware [10]
Owned by State Highway Agency [01], DOT District: 5
S.E. OF MIDDLETOWN

Condition
Deck: Not Applicable [N]
Superstructure: Not Applicable [N]
Substructure: Not Applicable [N]
Loading
Design: M 18 / H 20 [4]
Operating: 50.5 metric ton = 55.6 tons (Load Factor(LF) [1])
Inventory: 30.3 metric ton = 33.3 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: Better than present minimum criteria [7] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: March 1999 [399] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.4 km = 0.2 mi
Traffic
ADT: 5038 (2017) and Trucks: 6%
Future ADT: 2267 (In 2037 )