US Bridges

I-93 SB Ramps over I-93 NB

Fair

Rockingham County, New Hampshire · .2 MI S of JCT Nh 38 · Structure no. 022800830005800

Built
2008
17 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
153 ft
1 main span
Daily traffic
18,966
2023 count
Owner
State
State Highway Agency

About this bridge

I-93 SB Ramps over I-93 NB is a steel stringer/multi-beam or girder carrying I-93 SB Ramps over I-93 NB in Rockingham County, New Hampshire. It was built in 2008, so it is 17 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 18,966 vehicles a day, roughly 9% of them trucks, projected to reach 28,069 by 2043. The structure is 153 ft (46.6 m) long and 81 ft wide.

Location

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CarriesI-93 SB Ramps
CrossesI-93 NB
Location.2 MI S of JCT Nh 38
RouteInterstate 93
CountyRockingham County
StateNew Hampshire
Coordinates42.7615, -71.23337
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 rating83.7 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length153 ft (46.6 m)
Longest span144 ft (43.9 m)
Deck width81 ft (24.7 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,966 (2023)
Projected traffic28,069 by 2043
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 I-93 SB Ramps over I-93 NB built?

It was built in 2008, making it 17 years old in 2025.

What condition is I-93 SB Ramps over I-93 NB 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 May 2023.

How much traffic does I-93 SB Ramps over I-93 NB carry?

About 18,966 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-93 SB Ramps over I-93 NB?

The structure is 153 ft (46.6 m) long with a longest span of 144 ft (43.9 m) and a deck 81 ft wide.

Who owns I-93 SB Ramps over I-93 NB?

It is owned by the State Highway Agency.