US Bridges

Citizens Street over Sugar River

Fair

Sullivan County, New Hampshire · 100 Ft JCT RTE 12 · Structure no. 004701130011300

Built
1959
66 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
144 ft
2 main spans
Daily traffic
1,345
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Citizens Street over Sugar River is a steel continuous stringer/multi-beam or girder carrying Citizens Street over Sugar River in Sullivan County, New Hampshire. It was built in 1959, so it is 66 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 1,345 vehicles a day, roughly 3% of them trucks, projected to reach 1,990 by 2043. The structure is 144 ft (43.9 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCitizens Street
CrossesSugar River
Location100 Ft JCT RTE 12
RouteCity Street 0
CountySullivan County
StateNew Hampshire
Coordinates43.38417, -72.35358
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating37.1 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length144 ft (43.9 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,345 (2023)
Projected traffic1,990 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 Citizens Street over Sugar River built?

It was built in 1959, making it 66 years old in 2025.

What condition is Citizens Street 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 Citizens Street over Sugar River carry?

About 1,345 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Citizens Street over Sugar River?

The structure is 144 ft (43.9 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns Citizens Street over Sugar River?

It is owned by the City or Municipal Highway Agency.