US Bridges

SP Tpk SB on Ramp over Cocheco River

Good

Strafford County, New Hampshire · .1 Mile South of Rt. 125 · Structure no. 022201610011100

Built
2009
16 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
269 ft
2 main spans
Daily traffic
2,280
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

SP Tpk SB on Ramp over Cocheco River is a steel continuous stringer/multi-beam or girder carrying SP Tpk SB on Ramp over Cocheco River in Strafford County, New Hampshire. It was built in 2009, so it is 16 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 2,280 vehicles a day, roughly 4% of them trucks, projected to reach 3,374 by 2043. The structure is 269 ft (82 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesSP Tpk SB on Ramp
CrossesCocheco River
Location.1 Mile South of Rt. 125
CountyStrafford County
StateNew Hampshire
Coordinates43.2814, -70.97764
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 protection7 GoodSome minor problems.
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment9: Superior to present desirable criteria
Operating rating99 US tons
Inventory rating57.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length269 ft (82 m)
Longest span269 ft (82 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic2,280 (2023)
Projected traffic3,374 by 2043
Trucks4%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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)
NavigationNo navigation control on waterway

Frequently asked questions

When was SP Tpk SB on Ramp over Cocheco River built?

It was built in 2009, making it 16 years old in 2025.

What condition is SP Tpk SB on Ramp 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 SP Tpk SB on Ramp over Cocheco River carry?

About 2,280 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SP Tpk SB on Ramp over Cocheco River?

The structure is 269 ft (82 m) long with a longest span of 269 ft (82 m) and a deck 30 ft wide.

Who owns SP Tpk SB on Ramp over Cocheco River?

It is owned by the State Toll Authority.