US Bridges

Leighton Meadow RD over Phillips Brook

PoorPosted for load

Coos County, New Hampshire · 100 Ft FR Sullivan RD 61 · Structure no. 024000680017300

Built
1940
85 years old, rebuilt 1970
Condition
Poor
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Leighton Meadow RD over Phillips Brook is a prestressed concrete tee beam carrying Leighton Meadow RD over Phillips Brook in Coos County, New Hampshire. It was built in 1940 and reconstructed in 1970, 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. Its operating status is: posted for load restriction.

It carries about 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 40 ft (12.2 m) long and 13 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesLeighton Meadow RD
CrossesPhillips Brook
Location100 Ft FR Sullivan RD 61
CountyCoos County
StateNew Hampshire
Coordinates44.63727, -71.32796
Functional classRural Local

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 16 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating6 US tons
Inventory rating4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span35 ft (10.7 m)
Deck width13 ft (4.1 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Leighton Meadow RD over Phillips Brook built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1970.

What condition is Leighton Meadow RD over Phillips Brook 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 Leighton Meadow RD over Phillips Brook carry?

About 96 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Leighton Meadow RD over Phillips Brook?

The structure is 40 ft (12.2 m) long with a longest span of 35 ft (10.7 m) and a deck 13 ft wide.

Who owns Leighton Meadow RD over Phillips Brook?

It is owned by the City or Municipal Highway Agency.