US Bridges

I-93 NB over NH101 WB Sbe Ramp

Fair

Hillsborough County, New Hampshire · 0.05 MI N JCT Bridge ST · Structure no. 016101260012600

Built
1977
48 years old, rebuilt 1999
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
471 ft
3 main spans
Daily traffic
25,082
2023 count
Owner
State
State Highway Agency

About this bridge

I-93 NB over NH101 WB Sbe Ramp is a steel continuous stringer/multi-beam or girder carrying I-93 NB over NH101 WB Sbe Ramp in Hillsborough County, New Hampshire. It was built in 1977 and reconstructed in 1999, so it is 48 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 25,082 vehicles a day, roughly 6% of them trucks, projected to reach 37,121 by 2043. The structure is 471 ft (143.6 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-93 NB
CrossesNH101 WB Sbe Ramp
Location0.05 MI N JCT Bridge ST
RouteInterstate 93
CountyHillsborough County
StateNew Hampshire
Coordinates42.99504, -71.41681
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating34.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length471 ft (143.6 m)
Longest span180 ft (54.9 m)
Deck width62 ft (18.9 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,082 (2023)
Projected traffic37,121 by 2043
Trucks6%
Lanes on structure3
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 I-93 NB over NH101 WB Sbe Ramp built?

It was built in 1977, making it 48 years old in 2025. It was reconstructed in 1999.

What condition is I-93 NB over NH101 WB Sbe 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 I-93 NB over NH101 WB Sbe Ramp carry?

About 25,082 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is I-93 NB over NH101 WB Sbe Ramp?

The structure is 471 ft (143.6 m) long with a longest span of 180 ft (54.9 m) and a deck 62 ft wide.

Who owns I-93 NB over NH101 WB Sbe Ramp?

It is owned by the State Highway Agency.