US Bridges

Maplewood Avenue over North Mill Pond

Poor

Rockingham County, New Hampshire · 0.2 MI E JCT US 1 Bypass · Structure no. 021702310010300

Built
1940
85 years old, rebuilt 1976
Condition
Poor
inspected October 2024
Type
Culvert
Masonry
Length
25 ft
1 main span
Daily traffic
5,829
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Maplewood Avenue over North Mill Pond is a masonry culvert carrying Maplewood Avenue over North Mill Pond in Rockingham County, New Hampshire. It was built in 1940 and reconstructed in 1976, so it is 85 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 5,829 vehicles a day, roughly 5% of them trucks, projected to reach 8,626 by 2043. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesMaplewood Avenue
CrossesNorth Mill Pond
Location0.2 MI E JCT US 1 Bypass
RouteCity Street 0
CountyRockingham County
StateNew Hampshire
Coordinates43.07969, -70.76543
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionOctober 2024
Inspection intervalevery 16 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating27.6 US tons

Structure

Structure typeCulvert
MaterialMasonry
DeckNot applicable
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,829 (2023)
Projected traffic8,626 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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)
NavigationNo navigation control on waterway

Frequently asked questions

When was Maplewood Avenue over North Mill Pond built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1976.

What condition is Maplewood Avenue over North Mill Pond in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Maplewood Avenue over North Mill Pond carry?

About 5,829 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Maplewood Avenue over North Mill Pond?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m).

Who owns Maplewood Avenue over North Mill Pond?

It is owned by the City or Municipal Highway Agency.