US Bridges

NH101 WB over I-293(RAMP D)

Fair

Hillsborough County, New Hampshire · .2 MI JCT Rt 3 · Structure no. 001901840013200

Built
1959
66 years old, rebuilt 1993
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
153 ft
3 main spans
Daily traffic
24,986
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

NH101 WB over I-293(RAMP D) is a steel continuous stringer/multi-beam or girder carrying NH101 WB over I-293(RAMP D) in Hillsborough County, New Hampshire. It was built in 1959 and reconstructed in 1993, so it is 66 years old, older 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 24,986 vehicles a day, roughly 8% of them trucks, projected to reach 36,979 by 2043. The structure is 153 ft (46.6 m) long and 50 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNH101 WB
CrossesI-293(RAMP D)
Location.2 MI JCT Rt 3
RouteState Highway 101
CountyHillsborough County
StateNew Hampshire
Coordinates42.95028, -71.47527
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating51.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length153 ft (46.6 m)
Longest span61 ft (18.6 m)
Deck width50 ft (15.2 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,986 (2023)
Projected traffic36,979 by 2043
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 NH101 WB over I-293(RAMP D) built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1993.

What condition is NH101 WB over I-293(RAMP D) 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 2023.

How much traffic does NH101 WB over I-293(RAMP D) carry?

About 24,986 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is NH101 WB over I-293(RAMP D)?

The structure is 153 ft (46.6 m) long with a longest span of 61 ft (18.6 m) and a deck 50 ft wide.

Who owns NH101 WB over I-293(RAMP D)?

It is owned by the State Toll Authority.