US Bridges

Chesham Road over Minnewawa Brook

Poor

Cheshire County, New Hampshire · 0.3 MI FR Dublin Tl · Structure no. 011500560005800

Built
1939
86 years old, rebuilt 1984
Condition
Poor
inspected November 2024
Type
Slab
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
1,191
2023 count
Owner
State
State Highway Agency

About this bridge

Chesham Road over Minnewawa Brook is a concrete continuous slab carrying Chesham Road over Minnewawa Brook in Cheshire County, New Hampshire. It was built in 1939 and reconstructed in 1984, so it is 86 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.

It carries about 1,191 vehicles a day, roughly 10% of them trucks, projected to reach 1,762 by 2043. The structure is 90 ft (27.4 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesChesham Road
CrossesMinnewawa Brook
Location0.3 MI FR Dublin Tl
RouteState Highway 0
CountyCheshire County
StateNew Hampshire
Coordinates42.92732, -72.15175
Functional classRural Minor Collector

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 8 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.7 US tons
Inventory rating26.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,191 (2023)
Projected traffic1,762 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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)
NavigationNo navigation control on waterway

Frequently asked questions

When was Chesham Road over Minnewawa Brook built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1984.

What condition is Chesham 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 Chesham Road over Minnewawa Brook carry?

About 1,191 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Chesham Road over Minnewawa Brook?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns Chesham Road over Minnewawa Brook?

It is owned by the State Highway Agency.