US Bridges

I-93 NB over Stevens Pond

Fair

Hillsborough County, New Hampshire · 0.1 MI N Bridge St. · Structure no. 016101230011800

Built
1977
48 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,010 ft
7 main spans
Daily traffic
36,942
2023 count
Owner
State
State Highway Agency

About this bridge

I-93 NB over Stevens Pond is a steel continuous stringer/multi-beam or girder carrying I-93 NB over Stevens Pond in Hillsborough County, New Hampshire. It was built in 1977, 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 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 36,942 vehicles a day, roughly 6% of them trucks, projected to reach 54,674 by 2043. The structure is 1,010 ft (307.8 m) long and 74 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-93 NB
CrossesStevens Pond
Location0.1 MI N Bridge St.
RouteInterstate 93
CountyHillsborough County
StateNew Hampshire
Coordinates42.9979, -71.42397
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
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
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.8 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length1,010 ft (307.8 m)
Longest span145 ft (44.2 m)
Deck width74 ft (22.7 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,942 (2023)
Projected traffic54,674 by 2043
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-93 NB over Stevens Pond built?

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

What condition is I-93 NB over Stevens Pond 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 Stevens Pond carry?

About 36,942 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is I-93 NB over Stevens Pond?

The structure is 1,010 ft (307.8 m) long with a longest span of 145 ft (44.2 m) and a deck 74 ft wide.

Who owns I-93 NB over Stevens Pond?

It is owned by the State Highway Agency.