US Bridges

Oxbow Road over Suncook River

Fair

Belknap County, New Hampshire · 0.8 MI FR Nh 28 · Structure no. 001401260011300

Built
1924
101 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete
Length
58 ft
1 main span
Daily traffic
73
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Oxbow Road over Suncook River is a concrete tee beam carrying Oxbow Road over Suncook River in Belknap County, New Hampshire. It was built in 1924, so it is 101 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 73 vehicles a day, roughly 4% of them trucks, projected to reach 108 by 2043. The structure is 58 ft (17.7 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesOxbow Road
CrossesSuncook River
Location0.8 MI FR Nh 28
CountyBelknap County
StateNew Hampshire
Coordinates43.35723, -71.26445
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 inspectionSeptember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating34 US tons
Inventory rating20.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length58 ft (17.7 m)
Longest span54 ft (16.5 m)
Deck width25 ft (7.5 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2023)
Projected traffic108 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 Oxbow Road over Suncook River built?

It was built in 1924, making it 101 years old in 2025.

What condition is Oxbow Road over Suncook River 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 2024.

How much traffic does Oxbow Road over Suncook River carry?

About 73 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Oxbow Road over Suncook River?

The structure is 58 ft (17.7 m) long with a longest span of 54 ft (16.5 m) and a deck 25 ft wide.

Who owns Oxbow Road over Suncook River?

It is owned by the City or Municipal Highway Agency.