US Bridges

Depot Road over NH101

Good

Rockingham County, New Hampshire · .5 MI E Candia Raymond Tl · Structure no. 003701720006400

Built
1981
44 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
240 ft
2 main spans
Daily traffic
2,919
2023 count
Owner
State
State Highway Agency

About this bridge

Depot Road over NH101 is a steel continuous stringer/multi-beam or girder carrying Depot Road over NH101 in Rockingham County, New Hampshire. It was built in 1981, so it is 44 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 2,919 vehicles a day, roughly 4% of them trucks, projected to reach 4,320 by 2043. The structure is 240 ft (73.2 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesDepot Road
CrossesNH101
Location.5 MI E Candia Raymond Tl
CountyRockingham County
StateNew Hampshire
Coordinates43.03418, -71.25508
Functional classRural Minor Collector

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.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.3 US tons
Inventory rating33.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length240 ft (73.2 m)
Longest span117 ft (35.7 m)
Deck width37 ft (11.4 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,919 (2023)
Projected traffic4,320 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Depot Road over NH101 built?

It was built in 1981, making it 44 years old in 2025.

What condition is Depot Road over NH101 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 Depot Road over NH101 carry?

About 2,919 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Depot Road over NH101?

The structure is 240 ft (73.2 m) long with a longest span of 117 ft (35.7 m) and a deck 37 ft wide.

Who owns Depot Road over NH101?

It is owned by the State Highway Agency.