US Bridges

Tandy Brook Road over Mill Brook

Fair

Sullivan County, New Hampshire · 2.1 MI FR Claremont Tl · Structure no. 005500890008200

Built
1955
70 years old, rebuilt 2007
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
37 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Tandy Brook Road over Mill Brook is a steel stringer/multi-beam or girder carrying Tandy Brook Road over Mill Brook in Sullivan County, New Hampshire. It was built in 1955 and reconstructed in 2007, so it is 70 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 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 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 37 ft (11.3 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesTandy Brook Road
CrossesMill Brook
Location2.1 MI FR Claremont Tl
CountySullivan County
StateNew Hampshire
Coordinates43.45518, -72.35991
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating34.6 US tons
Inventory rating20.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span34 ft (10.4 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
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Tandy Brook Road over Mill Brook built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 2007.

What condition is Tandy Brook Road over Mill Brook 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 September 2023.

How much traffic does Tandy Brook Road over Mill Brook carry?

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

How long is Tandy Brook Road over Mill Brook?

The structure is 37 ft (11.3 m) long with a longest span of 34 ft (10.4 m) and a deck 20 ft wide.

Who owns Tandy Brook Road over Mill Brook?

It is owned by the City or Municipal Highway Agency.