US Bridges

I-93 Fee Tpk over Ramp A-B

Fair

Merrimack County, New Hampshire · 2.7 MI No Manchester Tl · Structure no. 012800710013800

Built
1957
68 years old, rebuilt 1978
Condition
Fair
inspected June 2024
Type
Frame
Concrete
Length
47 ft
1 main span
Daily traffic
79,640
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-93 Fee Tpk over Ramp A-B is a concrete frame carrying I-93 Fee Tpk over Ramp A-B in Merrimack County, New Hampshire. It was built in 1957 and reconstructed in 1978, so it is 68 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 79,640 vehicles a day, roughly 9% of them trucks, projected to reach 117,867 by 2043. The structure is 47 ft (14.3 m) long and 402 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesI-93 Fee Tpk
CrossesRamp A-B
Location2.7 MI No Manchester Tl
RouteInterstate 93
CountyMerrimack County
StateNew Hampshire
Coordinates43.08628, -71.47394
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating66.4 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length47 ft (14.3 m)
Longest span40 ft (12.2 m)
Deck width402 ft (122.5 m)
Roadway width138 ft (42.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79,640 (2023)
Projected traffic117,867 by 2043
Trucks9%
Lanes on structure16
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.8 mi (19 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 Fee Tpk over Ramp A-B built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1978.

What condition is I-93 Fee Tpk over Ramp A-B 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 June 2024.

How much traffic does I-93 Fee Tpk over Ramp A-B carry?

About 79,640 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-93 Fee Tpk over Ramp A-B?

The structure is 47 ft (14.3 m) long with a longest span of 40 ft (12.2 m) and a deck 402 ft wide.

Who owns I-93 Fee Tpk over Ramp A-B?

It is owned by the State Toll Authority.