US Bridges

Elm Street over Winnipesaukee River

Fair

Belknap County, New Hampshire · Northfield Tl. · Structure no. 025600860004300

Built
1977
48 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
95 ft
1 main span
Daily traffic
9,362
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Elm Street over Winnipesaukee River is a steel stringer/multi-beam or girder carrying Elm Street over Winnipesaukee River in Belknap County, New Hampshire. It was built in 1977, so it is 48 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 9,362 vehicles a day, roughly 4% of them trucks, projected to reach 13,855 by 2043. The structure is 95 ft (29 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesElm Street
CrossesWinnipesaukee River
LocationNorthfield Tl.
Coordinates43.44168, -71.5886
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.9 US tons
Inventory rating33.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length95 ft (29 m)
Longest span93 ft (28.3 m)
Deck width40 ft (12.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,362 (2023)
Projected traffic13,855 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Elm Street over Winnipesaukee River built?

It was built in 1977, making it 48 years old in 2025.

What condition is Elm Street over Winnipesaukee 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 August 2024.

How much traffic does Elm Street over Winnipesaukee River carry?

About 9,362 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Elm Street over Winnipesaukee River?

The structure is 95 ft (29 m) long with a longest span of 93 ft (28.3 m) and a deck 40 ft wide.

Who owns Elm Street over Winnipesaukee River?

It is owned by the City or Municipal Highway Agency.