US Bridges

No Data Entered over Ammonoosuc River

Fair

Grafton County, New Hampshire · Map 10 · Structure no. 092201000001002

Built
2006
19 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
105 ft
1 main span
Daily traffic
100
2001 count
Owner
Federal
U.S. Forest Service

About this bridge

No Data Entered over Ammonoosuc River is a steel stringer/multi-beam or girder carrying No Data Entered over Ammonoosuc River in Grafton County, New Hampshire. It was built in 2006, so it is 19 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 125 by 2021. The structure is 105 ft (31.9 m) long and 22 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesNo Data Entered
CrossesAmmonoosuc River
LocationMap 10
RouteFederal Lands Road 16
Coordinates44.26504, -71.5002
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.5 US tons
Inventory rating51 US tons

Structure

MaterialSteel
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length105 ft (31.9 m)
Longest span101 ft (30.8 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2001)
Projected traffic125 by 2021
Trucks10%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$600,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was No Data Entered over Ammonoosuc River built?

It was built in 2006, making it 19 years old in 2025.

What condition is No Data Entered over Ammonoosuc 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 September 2023.

How much traffic does No Data Entered over Ammonoosuc River carry?

About 100 vehicles per day (2001 count), of which roughly 10% are trucks.

How long is No Data Entered over Ammonoosuc River?

The structure is 105 ft (31.9 m) long with a longest span of 101 ft (30.8 m) and a deck 22 ft wide.

Who owns No Data Entered over Ammonoosuc River?

It is owned by the U.S. Forest Service.