US Bridges

East Dunstable RD over Fee Tpk Ramp 4CD

Fair

Hillsborough County, New Hampshire · 0.01 MI from Salmon Bk · Structure no. 017701230007300

Built
1996
29 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
221 ft
2 main spans
Daily traffic
21,720
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

East Dunstable RD over Fee Tpk Ramp 4CD is a steel continuous stringer/multi-beam or girder carrying East Dunstable RD over Fee Tpk Ramp 4CD in Hillsborough County, New Hampshire. It was built in 1996, so it is 29 years old, younger than the New Hampshire average of 56.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 21,720 vehicles a day, roughly 1% of them trucks, projected to reach 32,145 by 2043. The structure is 221 ft (67.4 m) long and 109 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesEast Dunstable RD
CrossesFee Tpk Ramp 4CD
Location0.01 MI from Salmon Bk
RouteCity Street 0
CountyHillsborough County
StateNew Hampshire
Coordinates42.73306, -71.47045
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.7 US tons
Inventory rating50.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length221 ft (67.4 m)
Longest span124 ft (37.8 m)
Deck width109 ft (33.2 m)
Roadway width96 ft (29.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,720 (2023)
Projected traffic32,145 by 2043
Trucks1%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$314,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was East Dunstable RD over Fee Tpk Ramp 4CD built?

It was built in 1996, making it 29 years old in 2025.

What condition is East Dunstable RD over Fee Tpk Ramp 4CD in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does East Dunstable RD over Fee Tpk Ramp 4CD carry?

About 21,720 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is East Dunstable RD over Fee Tpk Ramp 4CD?

The structure is 221 ft (67.4 m) long with a longest span of 124 ft (37.8 m) and a deck 109 ft wide.

Who owns East Dunstable RD over Fee Tpk Ramp 4CD?

It is owned by the State Toll Authority.