Nh 16 SP Tpk SB over Cocheco River
PoorStrafford County, New Hampshire · 3.6 Mi. from Rochester Tl · Structure no. 006501050013300
- Built
- 1957
- 68 years old, rebuilt 1991
- Condition
- Poor
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 267 ft
- 4 main spans
- Daily traffic
- 23,607
- 2023 count
- Owner
- Toll Authority
- State Toll Authority
About this bridge
Nh 16 SP Tpk SB over Cocheco River is a steel continuous stringer/multi-beam or girder carrying Nh 16 SP Tpk SB over Cocheco River in Strafford County, New Hampshire. It was built in 1957 and reconstructed in 1991, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 23,607 vehicles a day, roughly 8% of them trucks, projected to reach 34,938 by 2043. The structure is 267 ft (81.4 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nh 16 SP Tpk SB over Cocheco River built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1991.
What condition is Nh 16 SP Tpk SB over Cocheco River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.
How much traffic does Nh 16 SP Tpk SB over Cocheco River carry?
About 23,607 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is Nh 16 SP Tpk SB over Cocheco River?
The structure is 267 ft (81.4 m) long with a longest span of 70 ft (21.3 m) and a deck 44 ft wide.
Who owns Nh 16 SP Tpk SB over Cocheco River?
It is owned by the State Toll Authority.