US Bridges

I-93 SB over Stevens Pond

Fair

Hillsborough County, New Hampshire · 0.1 MI N Bridge St. · Structure no. 016101240011900

Built
1977
48 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,127 ft
14 main spans
Daily traffic
48,294
2023 count
Owner
State
State Highway Agency

About this bridge

I-93 SB over Stevens Pond is a steel continuous stringer/multi-beam or girder carrying I-93 SB 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 48,294 vehicles a day, roughly 9% of them trucks, projected to reach 71,475 by 2043. The structure is 1,127 ft (343.5 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-93 SB
CrossesStevens Pond
Location0.1 MI N Bridge St.
RouteInterstate 93
CountyHillsborough County
StateNew Hampshire
Coordinates42.99688, -71.42309
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.3 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans14
Design loadHS 20 + Mod
Structure length1,127 ft (343.5 m)
Longest span81 ft (24.7 m)
Deck width63 ft (19.2 m)
Roadway width58 ft (17.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,294 (2023)
Projected traffic71,475 by 2043
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-93 SB over Stevens Pond built?

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

What condition is I-93 SB 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 September 2023.

How much traffic does I-93 SB over Stevens Pond carry?

About 48,294 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-93 SB over Stevens Pond?

The structure is 1,127 ft (343.5 m) long with a longest span of 81 ft (24.7 m) and a deck 63 ft wide.

Who owns I-93 SB over Stevens Pond?

It is owned by the State Highway Agency.