US Bridges

US202 Nh 9 over Liberty Hill Road

Good

Merrimack County, New Hampshire · 2.86 MI from Hillsboro Tl · Structure no. 012001010011600

Built
1974
51 years old, rebuilt 2006
Condition
Good
inspected March 2024
Type
Frame
Concrete
Length
78 ft
1 main span
Daily traffic
14,456
2023 count
Owner
State
State Highway Agency

About this bridge

US202 Nh 9 over Liberty Hill Road is a concrete frame carrying US202 Nh 9 over Liberty Hill Road in Merrimack County, New Hampshire. It was built in 1974 and reconstructed in 2006, so it is 51 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 14,456 vehicles a day, roughly 7% of them trucks, projected to reach 21,394 by 2043. The structure is 78 ft (23.8 m) long and 47 ft wide.

CarriesUS202 Nh 9
CrossesLiberty Hill Road
Location2.86 MI from Hillsboro Tl
RouteU.S. Route 202
Coordinates43.1784, -71.84159
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating73.4 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length78 ft (23.8 m)
Longest span68 ft (20.7 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,456 (2023)
Projected traffic21,394 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$314,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US202 Nh 9 over Liberty Hill Road built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2006.

What condition is US202 Nh 9 over Liberty Hill Road 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 March 2024.

How much traffic does US202 Nh 9 over Liberty Hill Road carry?

About 14,456 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is US202 Nh 9 over Liberty Hill Road?

The structure is 78 ft (23.8 m) long with a longest span of 68 ft (20.7 m) and a deck 47 ft wide.

Who owns US202 Nh 9 over Liberty Hill Road?

It is owned by the State Highway Agency.