US Bridges

NH120 over Bloods Brook

Fair

Sullivan County, New Hampshire · 4.2 MI from Lebanon Tl · Structure no. 021301620010000

Built
1934
91 years old, rebuilt 1973
Condition
Fair
inspected April 2024
Type
Frame
Concrete
Length
36 ft
1 main span
Daily traffic
2,707
2023 count
Owner
State
State Highway Agency

About this bridge

NH120 over Bloods Brook is a concrete frame carrying NH120 over Bloods Brook in Sullivan County, New Hampshire. It was built in 1934 and reconstructed in 1973, so it is 91 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 5 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 2,707 vehicles a day, roughly 4% of them trucks, projected to reach 4,006 by 2043. The structure is 36 ft (11 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNH120
CrossesBloods Brook
Location4.2 MI from Lebanon Tl
RouteState Highway 120
CountySullivan County
StateNew Hampshire
Coordinates43.53956, -72.26342
Functional classRural Major Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
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 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 rating58.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length36 ft (11 m)
Longest span30 ft (9.1 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,707 (2023)
Projected traffic4,006 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

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 NH120 over Bloods Brook built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1973.

What condition is NH120 over Bloods 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 April 2024.

How much traffic does NH120 over Bloods Brook carry?

About 2,707 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is NH120 over Bloods Brook?

The structure is 36 ft (11 m) long with a longest span of 30 ft (9.1 m) and a deck 36 ft wide.

Who owns NH120 over Bloods Brook?

It is owned by the State Highway Agency.