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Nearby Bridges in NBI 2021: 3


US 4:NH 16:TPK SB over LITTLE BAY:RD (Route: 4)
Num:6502010002400x
Open: no restriction [A]
Built: 2018, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Precast Panels [2] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 502.5 m = 1648.7 ft
Main Spans: 9 at 83.8 m = 274.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 21.2 m = 69.6 ft (4 Lanes) and Out-To-Out: 22.9 m = 75.1 ft for a 21.3 m = 69.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 14.2 m = 46.6 ft
Location
Dover [18820]: Strafford County [017], New Hampshire [33]
Owned by State Toll Authority [31], DOT District: 6
DOVER-NEWINGTON T.L.
Condition
Deck: Excellent [9]
Superstructure: Excellent [9]
Substructure: Excellent [9]
Loading
Design: HL93 [A]
Operating: 61.1 metric ton = 67.2 tons (Load Factor(LF) [1])
Inventory: 36.6 metric ton = 40.3 tons (Load Factor(LF) [1])
Appraisal
Structural: Superior to present desirable criteria [9]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] 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: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 2.9 km = 1.8 mi
Traffic
ADT: 34782 (2019) and Trucks: 8%
Future ADT: 51477 (In 2041 )
US 4:NH 16:TPK NB over LITTLE BAY:RD (Route: 4)
Num:6502010002500x
Open: no restriction [A]
Built: 1966, Reconstructed: 2018
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] 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: 487.1 m = 1598.2 ft
Main Spans: 9 at 83.8 m = 274.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 21.8 m = 71.5 ft (4 Lanes) and Out-To-Out: 22.9 m = 75.1 ft for a 21.9 m = 71.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 13.7 m = 44.9 ft
Location
Dover [18820]: Strafford County [017], New Hampshire [33]
Owned by State Toll Authority [31], DOT District: 6
DOVER-NEWINGTON T.L.
Condition
Deck: Excellent [9]
Superstructure: Excellent [9]
Substructure: Very Good [8]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 57.2 metric ton = 62.9 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 43.9 metric ton = 48.3 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Equal to present desirable criteria [8]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] 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: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 2.9 km = 1.8 mi
Traffic
ADT: 35152 (2019) and Trucks: 8%
Future ADT: 52024 (In 2041 )
US 4:NH 16:SP TPK over SHATTUCK WAY (Route: 4)
Num:18501030012400x
Open: no restriction [A]
Built: 1983, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.6 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Frame [07]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 14.6 m = 47.9 ft
Main Spans: 1 at 12.8 m = 42.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 30 m = 98.4 ft (4 Lanes) and Out-To-Out: 31.8 m = 104.3 ft for a 16.8 m = 55.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Newington [51620]: Rockingham County [015], New Hampshire [33]
Owned by State Toll Authority [31], DOT District: 6
2.5 MI FROM PORTSMOUTH T
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 89.8 metric ton = 98.8 tons (Load Factor(LF) [1])
Inventory: 81.6 metric ton = 89.8 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: April 1999 [499] 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: 0.3 km = 0.2 mi
Traffic
ADT: 69934 (2019) and Trucks: 8%
Future ADT: 103502 (In 2041 )

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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