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Nearby Bridges in NBI 2021: 2


EAST THETFORD ROAD over CONNECTICUT RIVER (Route: 0)
Num:15700530011200x
Posted for load [P]
Built: 1937, 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): Steel [3] Truss - Thru [10]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 143.6 m = 471.2 ft
Main Spans: 2 at 70.7 m = 232.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.4 m = 21.0 ft (2 Lanes) and Out-To-Out: 7.2 m = 23.6 ft for a 6.4 m = 21.0 ft approaching roadway.
Vertical Clearance: 4.42 m = 14.5 ft and Navigational Clearance: 0 = N/A
Location
Lyme [44260]: Grafton County [009], New Hampshire [33]
Owned by State Highway Agency [01], DOT District: 2
0.1 MI FROM VERMONT SL
Condition
Deck: Fair [5]
Superstructure: Poor [4]
Substructure: Poor [4]
Loading
Design: M 13.5 / H 15 [2]
Operating: 23.7 metric ton = 26.1 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 18.1 metric ton = 19.9 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
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 the assessed or calculated scour condition. [8]
Inspections
Date: November 2020 [1120] and Frequency: 8
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 1 km = 0.6 mi
Traffic
ADT: 2118 (2019) and Trucks: 4%
Future ADT: 3134 (In 2041 )
EAST THETFORD ROAD over CONNECTICUT RIVER (Route: 0)
Num:200180B03309112x
Posted for load [P]
Built: 1937, 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): Steel [3] Truss - Thru [10]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 143.6 m = 471.2 ft
Main Spans: 2 at 7 m = 23.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.4 m = 21.0 ft (2 Lanes) and Out-To-Out: 7.2 m = 23.6 ft for a 6.1 m = 20.0 ft approaching roadway.
Vertical Clearance: 4.42 m = 14.5 ft and Navigational Clearance: 0 = N/A
Location
Thetford [72400]: Orange County [017], Vermont [50]
Owned by State Highway Agency [01], DOT District: 4
0.1 MI FROM VERMONT SL
Condition
Deck: Fair [5]
Superstructure: Poor [4]
Substructure: Poor [4]
Loading
Design: M 13.5 / H 15 [2]
Operating: 23.4 metric ton = 25.7 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 18 metric ton = 19.8 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
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 the assessed or calculated scour condition. [8]
Inspections
Date: November 2020 [1120] and Frequency: 8
Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 1729 (2017) and Trucks: 4%
Future ADT: 1816 (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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