US Bridges

South Road over Minnewawa Brook

Poor

Cheshire County, New Hampshire · 0.9 MI FR Dublin Tl · Structure no. 011500610006000

Built
1950
75 years old
Condition
Poor
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

South Road over Minnewawa Brook is a prestressed concrete tee beam carrying South Road over Minnewawa Brook in Cheshire County, New Hampshire. It was built in 1950, so it is 75 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 4 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: open, temporary structure in place while original is closed.

It carries about 96 vehicles a day, projected to reach 142 by 2043. The structure is 31 ft (9.4 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesSouth Road
CrossesMinnewawa Brook
Location0.9 MI FR Dublin Tl
CountyCheshire County
StateNew Hampshire
Coordinates42.92794, -72.14548
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 16 months
Operating statusOpen, temporary structure in place while original is closed
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span29 ft (8.8 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 South Road over Minnewawa Brook built?

It was built in 1950, making it 75 years old in 2025.

What condition is South Road over Minnewawa 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 November 2024.

How much traffic does South Road over Minnewawa Brook carry?

About 96 vehicles per day (2023 count).

How long is South Road over Minnewawa Brook?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 20 ft wide.

Who owns South Road over Minnewawa Brook?

It is owned by the City or Municipal Highway Agency.