US Bridges

Nh 11 NH103 over Sugar River

Fair

Sullivan County, New Hampshire · 4.4 MI from Vermont Sl · Structure no. 004701320009700

Built
1981
44 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
133 ft
1 main span
Daily traffic
13,248
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nh 11 NH103 over Sugar River is a steel stringer/multi-beam or girder carrying Nh 11 NH103 over Sugar River in Sullivan County, New Hampshire. It was built in 1981, so it is 44 years old, younger 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 13,248 vehicles a day, roughly 5% of them trucks, projected to reach 19,607 by 2043. The structure is 133 ft (40.5 m) long and 76 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNh 11 NH103
CrossesSugar River
Location4.4 MI from Vermont Sl
RouteState Highway 11
CountySullivan County
StateNew Hampshire
Coordinates43.37373, -72.33643
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.9 US tons
Inventory rating35.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length133 ft (40.5 m)
Longest span128 ft (39 m)
Deck width76 ft (23.3 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,248 (2023)
Projected traffic19,607 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 Nh 11 NH103 over Sugar River built?

It was built in 1981, making it 44 years old in 2025.

What condition is Nh 11 NH103 over Sugar 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 2023.

How much traffic does Nh 11 NH103 over Sugar River carry?

About 13,248 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Nh 11 NH103 over Sugar River?

The structure is 133 ft (40.5 m) long with a longest span of 128 ft (39 m) and a deck 76 ft wide.

Who owns Nh 11 NH103 over Sugar River?

It is owned by the City or Municipal Highway Agency.