US Bridges

NH116 over Ham Branch

Fair

Grafton County, New Hampshire · 2.01 MI S Franconia T.L. · Structure no. 007201240013100

Built
1932
93 years old
Condition
Fair
inspected March 2024
Type
Frame
Concrete
Length
36 ft
1 main span
Daily traffic
360
2023 count
Owner
State
State Highway Agency

About this bridge

NH116 over Ham Branch is a concrete frame carrying NH116 over Ham Branch in Grafton County, New Hampshire. It was built in 1932, so it is 93 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 360 vehicles a day, roughly 10% of them trucks, projected to reach 532 by 2043. The structure is 36 ft (11 m) long and 28 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesNH116
CrossesHam Branch
Location2.01 MI S Franconia T.L.
RouteState Highway 116
CountyGrafton County
StateNew Hampshire
Coordinates44.147, -71.78941
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating28.8 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length36 ft (11 m)
Longest span32 ft (9.8 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic360 (2023)
Projected traffic532 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 NH116 over Ham Branch built?

It was built in 1932, making it 93 years old in 2025.

What condition is NH116 over Ham Branch 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 March 2024.

How much traffic does NH116 over Ham Branch carry?

About 360 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NH116 over Ham Branch?

The structure is 36 ft (11 m) long with a longest span of 32 ft (9.8 m) and a deck 28 ft wide.

Who owns NH116 over Ham Branch?

It is owned by the State Highway Agency.