US Bridges

Bowman Drive over Black Brook

Good

Cheshire County, New Hampshire · 450 Ft N Nh 12 · Structure no. 013600870010500

Built
1997
28 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
510
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Bowman Drive over Black Brook is a concrete culvert carrying Bowman Drive over Black Brook in Cheshire County, New Hampshire. It was built in 1997, so it is 28 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 510 vehicles a day, projected to reach 754 by 2043. The structure is 34 ft (10.4 m) long.

Location

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CarriesBowman Drive
CrossesBlack Brook
Location450 Ft N Nh 12
CountyCheshire County
StateNew Hampshire
Coordinates42.95905, -72.32991
Functional classUrban 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic510 (2023)
Projected traffic754 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Bowman Drive over Black Brook built?

It was built in 1997, making it 28 years old in 2025.

What condition is Bowman Drive 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 Bowman Drive over Black Brook carry?

About 510 vehicles per day (2023 count).

How long is Bowman Drive over Black Brook?

The structure is 34 ft (10.4 m) long with a longest span of 8 ft (2.4 m).

Who owns Bowman Drive over Black Brook?

It is owned by the City or Municipal Highway Agency.