US Bridges

Steele Road over Nubanusit Brook

Good

Hillsborough County, New Hampshire · 70 Ft FR Briggs ST No 23 · Structure no. 020800690010100

Built
2000
25 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
38 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Steele Road over Nubanusit Brook is a concrete culvert carrying Steele Road over Nubanusit Brook in Hillsborough County, New Hampshire. It was built in 2000, so it is 25 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesSteele Road
CrossesNubanusit Brook
Location70 Ft FR Briggs ST No 23
CountyHillsborough County
StateNew Hampshire
Coordinates42.88519, -71.97102
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.2 US tons
Inventory rating42 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length38 ft (11.6 m)
Longest span36 ft (11 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Steele Road over Nubanusit Brook built?

It was built in 2000, making it 25 years old in 2025.

What condition is Steele Road over Nubanusit Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Steele Road over Nubanusit Brook carry?

About 96 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Steele Road over Nubanusit Brook?

The structure is 38 ft (11.6 m) long with a longest span of 36 ft (11 m).

Who owns Steele Road over Nubanusit Brook?

It is owned by the City or Municipal Highway Agency.