US Bridges

Leavitt Hill Road over Blow-Me-Down-Brook

Poor

Sullivan County, New Hampshire · 1.4 MI FR Corbin Park · Structure no. 005501750014300

Built
1950
75 years old, rebuilt 1991
Condition
Poor
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
112
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Leavitt Hill Road over Blow-Me-Down-Brook is a steel stringer/multi-beam or girder carrying Leavitt Hill Road over Blow-Me-Down-Brook in Sullivan County, New Hampshire. It was built in 1950 and reconstructed in 1991, 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.

It carries about 112 vehicles a day, roughly 4% of them trucks, projected to reach 165 by 2043. The structure is 23 ft (7 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesLeavitt Hill Road
CrossesBlow-Me-Down-Brook
Location1.4 MI FR Corbin Park
Coordinates43.49707, -72.27396
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 16 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 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 rating25.2 US tons
Inventory rating15.1 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112 (2023)
Projected traffic165 by 2043
Trucks4%
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 Leavitt Hill Road over Blow-Me-Down-Brook built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1991.

What condition is Leavitt Hill Road over Blow-Me-Down-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 Leavitt Hill Road over Blow-Me-Down-Brook carry?

About 112 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Leavitt Hill Road over Blow-Me-Down-Brook?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 25 ft wide.

Who owns Leavitt Hill Road over Blow-Me-Down-Brook?

It is owned by the City or Municipal Highway Agency.