US Bridges

Potato Road over Indian River

PoorPosted for load

Grafton County, New Hampshire · 1.5 MI Fromenfield Tl · Structure no. 003601470005500

Built
1930
95 years old, rebuilt 1994
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
54 ft
1 main span
Daily traffic
655
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Potato Road over Indian River is a steel stringer/multi-beam or girder carrying Potato Road over Indian River in Grafton County, New Hampshire. It was built in 1930 and reconstructed in 1994, so it is 95 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 655 vehicles a day, roughly 4% of them trucks, projected to reach 969 by 2043. The structure is 54 ft (16.5 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesPotato Road
CrossesIndian River
Location1.5 MI Fromenfield Tl
Coordinates43.64324, -72.05155
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
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 inspectionSeptember 2024
Inspection intervalevery 16 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating17.6 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length54 ft (16.5 m)
Longest span49 ft (14.9 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic655 (2023)
Projected traffic969 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Potato Road over Indian River built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1994.

What condition is Potato Road over Indian River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Potato Road over Indian River carry?

About 655 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Potato Road over Indian River?

The structure is 54 ft (16.5 m) long with a longest span of 49 ft (14.9 m) and a deck 22 ft wide.

Who owns Potato Road over Indian River?

It is owned by the City or Municipal Highway Agency.