US Bridges

NH101 WB over Main Street

Good

Rockingham County, New Hampshire · 4.2MI E of Candia Tl · Structure no. 021901340010200

Built
1982
43 years old, rebuilt 2000
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
1 main span
Daily traffic
21,050
2023 count
Owner
State
State Highway Agency

About this bridge

NH101 WB over Main Street is a steel stringer/multi-beam or girder carrying NH101 WB over Main Street in Rockingham County, New Hampshire. It was built in 1982 and reconstructed in 2000, so it is 43 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 21,050 vehicles a day, roughly 7% of them trucks, projected to reach 31,154 by 2043. The structure is 75 ft (22.8 m) long and 45 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNH101 WB
CrossesMain Street
Location4.2MI E of Candia Tl
RouteState Highway 101
Coordinates43.02798, -71.17572
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating41 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length75 ft (22.8 m)
Longest span70 ft (21.3 m)
Deck width45 ft (13.6 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,050 (2023)
Projected traffic31,154 by 2043
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 NH101 WB over Main Street built?

It was built in 1982, making it 43 years old in 2025. It was reconstructed in 2000.

What condition is NH101 WB over Main Street 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 2024.

How much traffic does NH101 WB over Main Street carry?

About 21,050 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is NH101 WB over Main Street?

The structure is 75 ft (22.8 m) long with a longest span of 70 ft (21.3 m) and a deck 45 ft wide.

Who owns NH101 WB over Main Street?

It is owned by the State Highway Agency.