US Bridges

Access Road over I-93 NB Off Ramp

Good

Merrimack County, New Hampshire · 2.6 M North Manchester Tl · Structure no. 012800720013600

Built
1978
47 years old, rebuilt 2015
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
68 ft
1 main span
Daily traffic
500
2014 count
Owner
Toll Authority
State Toll Authority

About this bridge

Access Road over I-93 NB Off Ramp is a steel stringer/multi-beam or girder carrying Access Road over I-93 NB Off Ramp in Merrimack County, New Hampshire. It was built in 1978 and reconstructed in 2015, so it is 47 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 500 vehicles a day, roughly 9% of them trucks, projected to reach 740 by 2034. The structure is 68 ft (20.7 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesAccess Road
CrossesI-93 NB Off Ramp
Location2.6 M North Manchester Tl
CountyMerrimack County
StateNew Hampshire
Coordinates43.08566, -71.47257
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.6 US tons
Inventory rating48.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length68 ft (20.7 m)
Longest span62 ft (18.9 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2014)
Projected traffic740 by 2034
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Access Road over I-93 NB Off Ramp built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 2015.

What condition is Access Road over I-93 NB Off Ramp in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does Access Road over I-93 NB Off Ramp carry?

About 500 vehicles per day (2014 count), of which roughly 9% are trucks.

How long is Access Road over I-93 NB Off Ramp?

The structure is 68 ft (20.7 m) long with a longest span of 62 ft (18.9 m) and a deck 31 ft wide.

Who owns Access Road over I-93 NB Off Ramp?

It is owned by the State Toll Authority.