US Bridges

NH101 EB over US 3

Good

Hillsborough County, New Hampshire · NH101 EB over US 3 · Structure no. 001901830013100

Built
2006
19 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
170 ft
1 main span
Daily traffic
20,158
2023 count
Owner
State
State Highway Agency

About this bridge

NH101 EB over US 3 is a steel stringer/multi-beam or girder carrying NH101 EB over US 3 in Hillsborough County, New Hampshire. It was built in 2006, so it is 19 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 20,158 vehicles a day, roughly 8% of them trucks, projected to reach 29,833 by 2043. The structure is 170 ft (51.8 m) long and 66 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNH101 EB
CrossesUS 3
LocationNH101 EB over US 3
RouteState Highway 101
CountyHillsborough County
StateNew Hampshire
Coordinates42.95071, -71.47739
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.7 US tons
Inventory rating47.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length170 ft (51.8 m)
Longest span170 ft (51.8 m)
Deck width66 ft (20.1 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,158 (2023)
Projected traffic29,833 by 2043
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NH101 EB over US 3 built?

It was built in 2006, making it 19 years old in 2025.

What condition is NH101 EB over US 3 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 April 2023.

How much traffic does NH101 EB over US 3 carry?

About 20,158 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is NH101 EB over US 3?

The structure is 170 ft (51.8 m) long with a longest span of 170 ft (51.8 m) and a deck 66 ft wide.

Who owns NH101 EB over US 3?

It is owned by the State Highway Agency.