US Bridges

Nh 16 SP Tpk NB over Cocheco River

Good

Strafford County, New Hampshire · 1.2 MI from JCT Rt 16 · Structure no. 022201060009200

Built
2012
13 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
146 ft
1 main span
Daily traffic
22,610
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Nh 16 SP Tpk NB over Cocheco River is a steel stringer/multi-beam or girder carrying Nh 16 SP Tpk NB over Cocheco River in Strafford County, New Hampshire. It was built in 2012, so it is 13 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 22,610 vehicles a day, roughly 5% of them trucks, projected to reach 33,462 by 2043. The structure is 146 ft (44.6 m) long and 135 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesNh 16 SP Tpk NB
CrossesCocheco River
Location1.2 MI from JCT Rt 16
RouteU.S. Route 202
CountyStrafford County
StateNew Hampshire
Coordinates43.32123, -70.99283
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.1 US tons
Inventory rating51.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length146 ft (44.6 m)
Longest span140 ft (42.8 m)
Deck width135 ft (41.1 m)
Roadway width128 ft (39.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,610 (2023)
Projected traffic33,462 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nh 16 SP Tpk NB over Cocheco River built?

It was built in 2012, making it 13 years old in 2025.

What condition is Nh 16 SP Tpk NB over Cocheco River 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 July 2023.

How much traffic does Nh 16 SP Tpk NB over Cocheco River carry?

About 22,610 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Nh 16 SP Tpk NB over Cocheco River?

The structure is 146 ft (44.6 m) long with a longest span of 140 ft (42.8 m) and a deck 135 ft wide.

Who owns Nh 16 SP Tpk NB over Cocheco River?

It is owned by the State Toll Authority.