US Bridges

NH115A over Israel River

Fair

Coos County, New Hampshire · 2.4 MI SW JCT US 2 · Structure no. 013500870009600

Built
1973
52 years old, rebuilt 2011
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
84 ft
1 main span
Daily traffic
724
2023 count
Owner
State
State Highway Agency

About this bridge

NH115A over Israel River is a steel stringer/multi-beam or girder carrying NH115A over Israel River in Coos County, New Hampshire. It was built in 1973 and reconstructed in 2011, so it is 52 years old, younger 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 724 vehicles a day, roughly 10% of them trucks, projected to reach 1,071 by 2043. The structure is 84 ft (25.6 m) long and 32 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesNH115A
CrossesIsrael River
Location2.4 MI SW JCT US 2
RouteState Highway 115A
CountyCoos County
StateNew Hampshire
Coordinates44.38693, -71.48011
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.9 US tons
Inventory rating42.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span80 ft (24.4 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic724 (2023)
Projected traffic1,071 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 NH115A over Israel River built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2011.

What condition is NH115A over Israel 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 March 2024.

How much traffic does NH115A over Israel River carry?

About 724 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NH115A over Israel River?

The structure is 84 ft (25.6 m) long with a longest span of 80 ft (24.4 m) and a deck 32 ft wide.

Who owns NH115A over Israel River?

It is owned by the State Highway Agency.