US Bridges

I-89 NB over US202 Nh 9

Fair

Merrimack County, New Hampshire · 1.9 So JCT Rt 127 · Structure no. 012901110008200

Built
1959
66 years old, rebuilt 1993
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
52 ft
1 main span
Daily traffic
12,106
2023 count
Owner
State
State Highway Agency

About this bridge

I-89 NB over US202 Nh 9 is a steel stringer/multi-beam or girder carrying I-89 NB over US202 Nh 9 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 12,106 vehicles a day, roughly 9% of them trucks, projected to reach 17,916 by 2043. The structure is 52 ft (15.8 m) long and 44 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesI-89 NB
CrossesUS202 Nh 9
Location1.9 So JCT Rt 127
RouteInterstate 89
CountyMerrimack County
StateNew Hampshire
Coordinates43.18191, -71.68821
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating65.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length52 ft (15.8 m)
Longest span47 ft (14.3 m)
Deck width44 ft (13.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,106 (2023)
Projected traffic17,916 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 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 US202 Nh 9 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 US202 Nh 9 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 2024.

How much traffic does I-89 NB over US202 Nh 9 carry?

About 12,106 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-89 NB over US202 Nh 9?

The structure is 52 ft (15.8 m) long with a longest span of 47 ft (14.3 m) and a deck 44 ft wide.

Who owns I-89 NB over US202 Nh 9?

It is owned by the State Highway Agency.