US Bridges

US 3 over Nhrr

Good

Belknap County, New Hampshire · 2.02 MI S. Meredith T/L · Structure no. 013901310015400

Built
1933
92 years old, rebuilt 2020
Condition
Good
inspected November 2024
Type
Slab
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
8,744
2023 count
Owner
State
State Highway Agency

About this bridge

US 3 over Nhrr is a prestressed concrete slab carrying US 3 over Nhrr in Belknap County, New Hampshire. It was built in 1933 and reconstructed in 2020, so it is 92 years old, older 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 8,744 vehicles a day, roughly 5% of them trucks, projected to reach 12,941 by 2043. The structure is 32 ft (9.8 m) long and 37 ft wide. If it were closed, the detour would be 46 mi (74 km).

CarriesUS 3
CrossesNhrr
Location2.02 MI S. Meredith T/L
RouteU.S. Route 3
Coordinates43.60411, -71.45661
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.3 US tons
Inventory rating65.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length32 ft (9.8 m)
Longest span29 ft (8.8 m)
Deck width37 ft (11.4 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,744 (2023)
Projected traffic12,941 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed46 mi (74 km)
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 US 3 over Nhrr built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 2020.

What condition is US 3 over Nhrr 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 November 2024.

How much traffic does US 3 over Nhrr carry?

About 8,744 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is US 3 over Nhrr?

The structure is 32 ft (9.8 m) long with a longest span of 29 ft (8.8 m) and a deck 37 ft wide.

Who owns US 3 over Nhrr?

It is owned by the State Highway Agency.