US Bridges

Lyndeborough Road over Meadow Brook

Good

Hillsborough County, New Hampshire · .2 North of 084/077 · Structure no. 017900900008100

Built
2023
2 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
49 ft
1 main span
Daily traffic
440
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lyndeborough Road over Meadow Brook is a concrete slab carrying Lyndeborough Road over Meadow Brook in Hillsborough County, New Hampshire. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 440 vehicles a day, roughly 4% of them trucks, projected to reach 651 by 2043. The structure is 49 ft (14.9 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesLyndeborough Road
CrossesMeadow Brook
Location.2 North of 084/077
RouteCity Street 0
CountyHillsborough County
StateNew Hampshire
Coordinates42.95972, -71.70444
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation9: Superior to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating66.4 US tons
Inventory rating51.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length49 ft (14.9 m)
Longest span29 ft (8.8 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic440 (2023)
Projected traffic651 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Lyndeborough Road over Meadow Brook built?

It was built in 2023, making it 2 years old in 2025.

What condition is Lyndeborough Road over Meadow 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 August 2023.

How much traffic does Lyndeborough Road over Meadow Brook carry?

About 440 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Lyndeborough Road over Meadow Brook?

The structure is 49 ft (14.9 m) long with a longest span of 29 ft (8.8 m) and a deck 31 ft wide.

Who owns Lyndeborough Road over Meadow Brook?

It is owned by the City or Municipal Highway Agency.