US Bridges

NH140 over Tioga River

Fair

Belknap County, New Hampshire · 2.8 MI from Northfield Tl · Structure no. 002001010006900

Built
1965
60 years old
Condition
Fair
inspected May 2024
Type
Slab
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
7,514
2023 count
Owner
State
State Highway Agency

About this bridge

NH140 over Tioga River is a prestressed concrete slab carrying NH140 over Tioga River in Belknap County, New Hampshire. It was built in 1965, so it is 60 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 7,514 vehicles a day, roughly 4% of them trucks, projected to reach 11,120 by 2043. The structure is 35 ft (10.7 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNH140
CrossesTioga River
Location2.8 MI from Northfield Tl
RouteState Highway 140
CountyBelknap County
StateNew Hampshire
Coordinates43.44397, -71.48234
Functional classRural Major 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.9 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span32 ft (9.8 m)
Deck width32 ft (9.9 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,514 (2023)
Projected traffic11,120 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 NH140 over Tioga River built?

It was built in 1965, making it 60 years old in 2025.

What condition is NH140 over Tioga 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 May 2024.

How much traffic does NH140 over Tioga River carry?

About 7,514 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is NH140 over Tioga River?

The structure is 35 ft (10.7 m) long with a longest span of 32 ft (9.8 m) and a deck 32 ft wide.

Who owns NH140 over Tioga River?

It is owned by the State Highway Agency.