US Bridges

Squag City Road over Blow-Me-Down Brook

FairPosted for load

Sullivan County, New Hampshire · 80 Ft FR Plainfield Tl · Structure no. 005500710016800

Built
1877
148 years old, rebuilt 2002
Condition
Fair
inspected September 2023
Type
Truss - Thru
Wood or Timber
Length
89 ft
1 main span
Daily traffic
19
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Squag City Road over Blow-Me-Down Brook is a wood or timber truss - thru carrying Squag City Road over Blow-Me-Down Brook in Sullivan County, New Hampshire. It was built in 1877 and reconstructed in 2002, so it is 148 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. Its operating status is: posted for load restriction.

It carries about 19 vehicles a day, roughly 4% of them trucks, projected to reach 28 by 2043. The structure is 89 ft (27.1 m) long and 16 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSquag City Road
CrossesBlow-Me-Down Brook
Location80 Ft FR Plainfield Tl
Coordinates43.5173, -72.37392
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating12.6 US tons
Inventory rating9.6 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length89 ft (27.1 m)
Longest span76 ft (23.2 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deck7 ft (2.1 m)

Traffic and service

Average daily traffic19 (2023)
Projected traffic28 by 2043
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusListed on the National Register of Historic Places
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 Squag City Road over Blow-Me-Down Brook built?

It was built in 1877, making it 148 years old in 2025. It was reconstructed in 2002.

What condition is Squag City Road over Blow-Me-Down 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 Squag City Road over Blow-Me-Down Brook carry?

About 19 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Squag City Road over Blow-Me-Down Brook?

The structure is 89 ft (27.1 m) long with a longest span of 76 ft (23.2 m) and a deck 16 ft wide.

Who owns Squag City Road over Blow-Me-Down Brook?

It is owned by the City or Municipal Highway Agency.