US Bridges

Manchester Road over Beaver Brook

Good

Hillsborough County, New Hampshire · 0.5 MI JCT 101 · Structure no. 000701340010000

Built
2015
10 years old
Condition
Good
inspected June 2023
Type
Slab
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
1,303
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Manchester Road over Beaver Brook is a prestressed concrete slab carrying Manchester Road over Beaver Brook in Hillsborough County, New Hampshire. It was built in 2015, so it is 10 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 1,303 vehicles a day, roughly 10% of them trucks, projected to reach 1,928 by 2043. The structure is 45 ft (13.6 m) long and 38 ft wide.

Location

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CarriesManchester Road
CrossesBeaver Brook
Location0.5 MI JCT 101
CountyHillsborough County
StateNew Hampshire
Coordinates42.86646, -71.62347
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
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 2023
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 alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating90.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length45 ft (13.6 m)
Longest span44 ft (13.4 m)
Deck width38 ft (11.7 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,303 (2023)
Projected traffic1,928 by 2043
Trucks10%
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 Manchester Road over Beaver Brook built?

It was built in 2015, making it 10 years old in 2025.

What condition is Manchester Road over Beaver 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 2023.

How much traffic does Manchester Road over Beaver Brook carry?

About 1,303 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Manchester Road over Beaver Brook?

The structure is 45 ft (13.6 m) long with a longest span of 44 ft (13.4 m) and a deck 38 ft wide.

Who owns Manchester Road over Beaver Brook?

It is owned by the City or Municipal Highway Agency.