US Bridges

I-89 NB over Stickney Hill Road

Fair

Merrimack County, New Hampshire · 1.7 MI NW JCT RTE 13 · Structure no. 005201640002400

Built
1959
66 years old, rebuilt 1993
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
20,003
2023 count
Owner
State
State Highway Agency

About this bridge

I-89 NB over Stickney Hill Road is a steel stringer/multi-beam or girder carrying I-89 NB over Stickney Hill Road in Merrimack County, New Hampshire. It was built in 1959 and reconstructed in 1993, 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 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 20,003 vehicles a day, roughly 9% of them trucks, projected to reach 29,604 by 2043. The structure is 50 ft (15.2 m) long and 60 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesI-89 NB
CrossesStickney Hill Road
Location1.7 MI NW JCT RTE 13
RouteInterstate 89
CountyMerrimack County
StateNew Hampshire
Coordinates43.18126, -71.59832
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
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 rating85.1 US tons
Inventory rating50.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length50 ft (15.2 m)
Longest span44 ft (13.4 m)
Deck width60 ft (18.3 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,003 (2023)
Projected traffic29,604 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.2 mi (18 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-89 NB over Stickney Hill Road built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1993.

What condition is I-89 NB over Stickney Hill 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 May 2023.

How much traffic does I-89 NB over Stickney Hill Road carry?

About 20,003 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-89 NB over Stickney Hill Road?

The structure is 50 ft (15.2 m) long with a longest span of 44 ft (13.4 m) and a deck 60 ft wide.

Who owns I-89 NB over Stickney Hill Road?

It is owned by the State Highway Agency.