US Bridges

I-93 NB over Wellington Road

Fair

Hillsborough County, New Hampshire · 0.2 MI E JCT RTE 28 · Structure no. 016101180011700

Built
1976
49 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
146 ft
1 main span
Daily traffic
42,094
2023 count
Owner
State
State Highway Agency

About this bridge

I-93 NB over Wellington Road is a steel stringer/multi-beam or girder carrying I-93 NB over Wellington Road in Hillsborough County, New Hampshire. It was built in 1976, so it is 49 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 42,094 vehicles a day, roughly 6% of them trucks, projected to reach 62,299 by 2043. The structure is 146 ft (44.5 m) long and 109 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-93 NB
CrossesWellington Road
Location0.2 MI E JCT RTE 28
RouteInterstate 93
CountyHillsborough County
StateNew Hampshire
Coordinates42.99965, -71.42937
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.2 US tons
Inventory rating34.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length146 ft (44.5 m)
Longest span138 ft (42.1 m)
Deck width109 ft (33.3 m)
Roadway width95 ft (29 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,094 (2023)
Projected traffic62,299 by 2043
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 I-93 NB over Wellington Road built?

It was built in 1976, making it 49 years old in 2025.

What condition is I-93 NB over Wellington Road 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 Wellington Road carry?

About 42,094 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is I-93 NB over Wellington Road?

The structure is 146 ft (44.5 m) long with a longest span of 138 ft (42.1 m) and a deck 109 ft wide.

Who owns I-93 NB over Wellington Road?

It is owned by the State Highway Agency.