US Bridges

NH101 WB over I-93 SB Off Ramp

Fair

Hillsborough County, New Hampshire · At Stevens Pond · Structure no. 016101260012500

Built
1961
64 years old, rebuilt 2000
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
71 ft
1 main span
Daily traffic
17,124
2023 count
Owner
State
State Highway Agency

About this bridge

NH101 WB over I-93 SB Off Ramp is a steel stringer/multi-beam or girder carrying NH101 WB over I-93 SB Off Ramp in Hillsborough County, New Hampshire. It was built in 1961 and reconstructed in 2000, so it is 64 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 5 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 17,124 vehicles a day, roughly 8% of them trucks, projected to reach 25,343 by 2043. The structure is 71 ft (21.6 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNH101 WB
CrossesI-93 SB Off Ramp
LocationAt Stevens Pond
RouteState Highway 101
CountyHillsborough County
StateNew Hampshire
Coordinates42.99534, -71.41677
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.6 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length71 ft (21.6 m)
Longest span63 ft (19.2 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic17,124 (2023)
Projected traffic25,343 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 NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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-93 SB Off Ramp built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2000.

What condition is NH101 WB over I-93 SB Off Ramp 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-93 SB Off Ramp carry?

About 17,124 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is NH101 WB over I-93 SB Off Ramp?

The structure is 71 ft (21.6 m) long with a longest span of 63 ft (19.2 m) and a deck 43 ft wide.

Who owns NH101 WB over I-93 SB Off Ramp?

It is owned by the State Highway Agency.