US Bridges

Pollard Road over Black Brook

Good

Hillsborough County, New Hampshire · Town Road · Structure no. 009501660013800

Built
2008
17 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
208
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pollard Road over Black Brook is a concrete culvert carrying Pollard Road over Black Brook in Hillsborough County, New Hampshire. It was built in 2008, so it is 17 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 208 vehicles a day, projected to reach 307 by 2043. The structure is 23 ft (7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesPollard Road
CrossesBlack Brook
LocationTown Road
CountyHillsborough County
StateNew Hampshire
Coordinates43.03969, -71.52075
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; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic208 (2023)
Projected traffic307 by 2043
Trucks0%
Lanes on structure2
Traffic directionHighway traffic not carried
CarriesHighway
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 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 Pollard Road over Black Brook built?

It was built in 2008, making it 17 years old in 2025.

What condition is Pollard Road over Black 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 Pollard Road over Black Brook carry?

About 208 vehicles per day (2023 count).

How long is Pollard Road over Black Brook?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m).

Who owns Pollard Road over Black Brook?

It is owned by the City or Municipal Highway Agency.