US Bridges

NH156 over Pawtuckaway River

Fair

Rockingham County, New Hampshire · .5 Mi. N. Raymond Tl · Structure no. 020101080002000

Built
1942
83 years old, rebuilt 1986
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
3,075
2023 count
Owner
State
State Highway Agency

About this bridge

NH156 over Pawtuckaway River is a concrete slab carrying NH156 over Pawtuckaway River in Rockingham County, New Hampshire. It was built in 1942 and reconstructed in 1986, so it is 83 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 6 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 3,075 vehicles a day, roughly 10% of them trucks, projected to reach 4,551 by 2043. The structure is 23 ft (7 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesNH156
CrossesPawtuckaway River
Location.5 Mi. N. Raymond Tl
RouteState Highway 156
Coordinates43.07238, -71.13987
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,075 (2023)
Projected traffic4,551 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
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 NH156 over Pawtuckaway River built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1986.

What condition is NH156 over Pawtuckaway River 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 April 2024.

How much traffic does NH156 over Pawtuckaway River carry?

About 3,075 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NH156 over Pawtuckaway River?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns NH156 over Pawtuckaway River?

It is owned by the State Highway Agency.