US Bridges

One ST over Piscataqua River Nh Road

Good

York County, Maine · Maine-New Hamsphire Sl · Structure no. 2546

Built
2013
12 years old
Condition
Good
inspected September 2023
Type
Movable - Lift
Steel
Length
897 ft
3 main spans
Daily traffic
7,749
2021 count
Owner
State
State Highway Agency

About this bridge

One ST over Piscataqua River Nh Road is a steel movable - lift carrying One ST over Piscataqua River Nh Road in York County, Maine. It was built in 2013, so it is 12 years old, younger than the Maine average of 53.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,749 vehicles a day, roughly 5% of them trucks, projected to reach 13,622 by 2036. The structure is 897 ft (273.4 m) long and 46 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesOne ST
CrossesPiscataqua River Nh Road
LocationMaine-New Hamsphire Sl
RouteState Highway 1
CountyYork County
StateMaine
Coordinates43.07955, -70.75256
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating41.4 US tons

Structure

Structure typeMovable - Lift
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length897 ft (273.4 m)
Longest span302 ft (92.2 m)
Deck width46 ft (14.1 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic7,749 (2021)
Projected traffic13,622 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed100 mi (161 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was One ST over Piscataqua River Nh Road built?

It was built in 2013, making it 12 years old in 2025.

What condition is One ST over Piscataqua River Nh Road in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does One ST over Piscataqua River Nh Road carry?

About 7,749 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is One ST over Piscataqua River Nh Road?

The structure is 897 ft (273.4 m) long with a longest span of 302 ft (92.2 m) and a deck 46 ft wide.

Who owns One ST over Piscataqua River Nh Road?

It is owned by the State Highway Agency.