US Bridges

Old Manchester RD over NH101

Fair

Rockingham County, New Hampshire · 3.2MI E of Candia Tl · Structure no. 021901120009900

Built
1984
41 years old, rebuilt 2015
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
233 ft
2 main spans
Daily traffic
2,816
2023 count
Owner
State
State Highway Agency

About this bridge

Old Manchester RD over NH101 is a steel continuous stringer/multi-beam or girder carrying Old Manchester RD over NH101 in Rockingham County, New Hampshire. It was built in 1984 and reconstructed in 2015, so it is 41 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,816 vehicles a day, roughly 4% of them trucks, projected to reach 4,167 by 2043. The structure is 233 ft (70.9 m) long and 78 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesOld Manchester RD
CrossesNH101
Location3.2MI E of Candia Tl
CountyRockingham County
StateNew Hampshire
Coordinates43.02414, -71.19528
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.2 US tons
Inventory rating44.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length233 ft (70.9 m)
Longest span114 ft (34.7 m)
Deck width78 ft (23.9 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,816 (2023)
Projected traffic4,167 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 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 Old Manchester RD over NH101 built?

It was built in 1984, making it 41 years old in 2025. It was reconstructed in 2015.

What condition is Old Manchester RD over NH101 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does Old Manchester RD over NH101 carry?

About 2,816 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Old Manchester RD over NH101?

The structure is 233 ft (70.9 m) long with a longest span of 114 ft (34.7 m) and a deck 78 ft wide.

Who owns Old Manchester RD over NH101?

It is owned by the State Highway Agency.