US Bridges

Elm Street over Nubanusit Brook

Fair

Hillsborough County, New Hampshire · 0.04 MI FR Main ST · Structure no. 020800840009000

Built
2003
22 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
3,391
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Elm Street over Nubanusit Brook is a steel stringer/multi-beam or girder carrying Elm Street over Nubanusit Brook in Hillsborough County, New Hampshire. It was built in 2003, so it is 22 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 3,391 vehicles a day, roughly 4% of them trucks, projected to reach 5,018 by 2043. The structure is 40 ft (12.2 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesElm Street
CrossesNubanusit Brook
Location0.04 MI FR Main ST
CountyHillsborough County
StateNew Hampshire
Coordinates42.87867, -71.9546
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 inspectionJuly 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating75.8 US tons
Inventory rating45.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length40 ft (12.2 m)
Longest span35 ft (10.7 m)
Deck width31 ft (9.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,391 (2023)
Projected traffic5,018 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
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 Nubanusit Brook built?

It was built in 2003, making it 22 years old in 2025.

What condition is Elm Street over Nubanusit Brook 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 July 2023.

How much traffic does Elm Street over Nubanusit Brook carry?

About 3,391 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Elm Street over Nubanusit Brook?

The structure is 40 ft (12.2 m) long with a longest span of 35 ft (10.7 m) and a deck 31 ft wide.

Who owns Elm Street over Nubanusit Brook?

It is owned by the City or Municipal Highway Agency.