US Bridges

Nh 16A over Wildcat Brook

Fair

Carroll County, New Hampshire · .55 MI N. JCT 16 · Structure no. 013201520005800

Built
1931
94 years old
Condition
Fair
inspected June 2024
Type
Frame
Concrete
Length
79 ft
1 main span
Daily traffic
1,305
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 16A over Wildcat Brook is a concrete frame carrying Nh 16A over Wildcat Brook in Carroll County, New Hampshire. It was built in 1931, so it is 94 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 1,305 vehicles a day, roughly 10% of them trucks, projected to reach 1,931 by 2043. The structure is 79 ft (24.1 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNh 16A
CrossesWildcat Brook
Location.55 MI N. JCT 16
RouteState Highway 16A
CountyCarroll County
StateNew Hampshire
Coordinates44.14646, -71.18153
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length79 ft (24.1 m)
Longest span69 ft (21 m)
Deck width32 ft (9.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,305 (2023)
Projected traffic1,931 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on 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 16A over Wildcat Brook built?

It was built in 1931, making it 94 years old in 2025.

What condition is Nh 16A over Wildcat Brook 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 June 2024.

How much traffic does Nh 16A over Wildcat Brook carry?

About 1,305 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Nh 16A over Wildcat Brook?

The structure is 79 ft (24.1 m) long with a longest span of 69 ft (21 m) and a deck 32 ft wide.

Who owns Nh 16A over Wildcat Brook?

It is owned by the State Highway Agency.