US Bridges

Nh 16 over Peabody River

Fair

Coos County, New Hampshire · 1.1 MI NE Martins Loc Tl · Structure no. 009700920005800

Built
1950
75 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
188 ft
2 main spans
Daily traffic
4,148
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 16 over Peabody River is a steel stringer/multi-beam or girder carrying Nh 16 over Peabody River in Coos County, New Hampshire. It was built in 1950, so it is 75 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 5 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 4,148 vehicles a day, roughly 7% of them trucks, projected to reach 6,139 by 2043. The structure is 188 ft (57.3 m) long and 34 ft wide. If it were closed, the detour would be 44.1 mi (71 km).

Location

Open in Google Maps
CarriesNh 16
CrossesPeabody River
Location1.1 MI NE Martins Loc Tl
RouteState Highway 16
CountyCoos County
StateNew Hampshire
Coordinates44.36395, -71.17668
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length188 ft (57.3 m)
Longest span90 ft (27.4 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,148 (2023)
Projected traffic6,139 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed44.1 mi (71 km)
TollOn a free road
National Highway SystemYes

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 Nh 16 over Peabody River built?

It was built in 1950, making it 75 years old in 2025.

What condition is Nh 16 over Peabody 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 Nh 16 over Peabody River carry?

About 4,148 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Nh 16 over Peabody River?

The structure is 188 ft (57.3 m) long with a longest span of 90 ft (27.4 m) and a deck 34 ft wide.

Who owns Nh 16 over Peabody River?

It is owned by the State Highway Agency.