US Bridges

NH118 over Indian River

Fair

Grafton County, New Hampshire · 1.3 MI from Dorchester Tl · Structure no. 003601780014100

Built
1950
75 years old, rebuilt 2011
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
47 ft
1 main span
Daily traffic
1,436
2023 count
Owner
State
State Highway Agency

About this bridge

NH118 over Indian River is a steel stringer/multi-beam or girder carrying NH118 over Indian River in Grafton County, New Hampshire. It was built in 1950 and reconstructed in 2011, 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 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 1,436 vehicles a day, roughly 4% of them trucks, projected to reach 2,125 by 2043. The structure is 47 ft (14.3 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNH118
CrossesIndian River
Location1.3 MI from Dorchester Tl
RouteState Highway 118
CountyGrafton County
StateNew Hampshire
Coordinates43.69018, -71.9881
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
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating49.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length47 ft (14.3 m)
Longest span38 ft (11.6 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,436 (2023)
Projected traffic2,125 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 NH118 over Indian River built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2011.

What condition is NH118 over Indian 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 NH118 over Indian River carry?

About 1,436 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is NH118 over Indian River?

The structure is 47 ft (14.3 m) long with a longest span of 38 ft (11.6 m) and a deck 27 ft wide.

Who owns NH118 over Indian River?

It is owned by the State Highway Agency.