US Bridges

NH123A over Bowers Brook

Good

Sullivan County, New Hampshire · In S Acworth Village · Structure no. 000101140006300

Built
2018
7 years old
Condition
Good
inspected June 2024
Type
Slab
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
1,167
2023 count
Owner
State
State Highway Agency

About this bridge

NH123A over Bowers Brook is a prestressed concrete slab carrying NH123A over Bowers Brook in Sullivan County, New Hampshire. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,167 vehicles a day, roughly 10% of them trucks, projected to reach 1,727 by 2043. The structure is 38 ft (11.7 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesNH123A
CrossesBowers Brook
LocationIn S Acworth Village
RouteState Highway 123A
Coordinates43.19052, -72.28346
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating74.7 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length38 ft (11.7 m)
Longest span33 ft (10.2 m)
Deck width32 ft (9.9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,167 (2023)
Projected traffic1,727 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 NH123A over Bowers Brook built?

It was built in 2018, making it 7 years old in 2025.

What condition is NH123A over Bowers 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 June 2024.

How much traffic does NH123A over Bowers Brook carry?

About 1,167 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NH123A over Bowers Brook?

The structure is 38 ft (11.7 m) long with a longest span of 33 ft (10.2 m) and a deck 32 ft wide.

Who owns NH123A over Bowers Brook?

It is owned by the State Highway Agency.