US Bridges

I-93 NB over Industrial Pk Nhrr(abd)

Fair

Grafton County, New Hampshire · 2 MI Bethlehem Tl · Structure no. 015301900005800

Built
1959
66 years old, rebuilt 1981
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
212 ft
4 main spans
Daily traffic
4,235
2023 count
Owner
State
State Highway Agency

About this bridge

I-93 NB over Industrial Pk Nhrr(abd) is a steel stringer/multi-beam or girder carrying I-93 NB over Industrial Pk Nhrr(abd) in Grafton County, New Hampshire. It was built in 1959 and reconstructed in 1981, so it is 66 years old, older 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 4,235 vehicles a day, roughly 9% of them trucks, projected to reach 6,267 by 2043. The structure is 212 ft (64.6 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesI-93 NB
CrossesIndustrial Pk Nhrr(abd)
Location2 MI Bethlehem Tl
RouteInterstate 93
CountyGrafton County
StateNew Hampshire
Coordinates44.30383, -71.79523
Functional classRural 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.8 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length212 ft (64.6 m)
Longest span58 ft (17.7 m)
Deck width43 ft (13.1 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,235 (2023)
Projected traffic6,267 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 Industrial Pk Nhrr(abd) built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1981.

What condition is I-93 NB over Industrial Pk Nhrr(abd) 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 Industrial Pk Nhrr(abd) carry?

About 4,235 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-93 NB over Industrial Pk Nhrr(abd)?

The structure is 212 ft (64.6 m) long with a longest span of 58 ft (17.7 m) and a deck 43 ft wide.

Who owns I-93 NB over Industrial Pk Nhrr(abd)?

It is owned by the State Highway Agency.