US Bridges

One ST over Piscataqua River

Good

York County, Maine · Alppr. Sly of Badger Is · Structure no. 5276

Built
2013
12 years old
Condition
Good
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
289 ft
5 main spans
Daily traffic
9,730
2016 count
Owner
State
State Highway Agency

About this bridge

One ST over Piscataqua River is a prestressed concrete tee beam carrying One ST over Piscataqua River 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 9,730 vehicles a day, roughly 5% of them trucks, projected to reach 13,622 by 2036. The structure is 289 ft (88 m) long and 47 ft wide. If it were closed, the detour would be 100 mi (161 km).

CarriesOne ST
CrossesPiscataqua River
LocationAlppr. Sly of Badger Is
RouteState Highway 1
StateMaine
Coordinates43.08108, -70.75201
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
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 rating60.7 US tons
Inventory rating45 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5 (+1 approach)
Design loadGreater than HL 93
Structure length289 ft (88 m)
Longest span61 ft (18.6 m)
Deck width47 ft (14.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,730 (2016)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was One ST over Piscataqua River built?

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

What condition is One ST over Piscataqua River 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 June 2024.

How much traffic does One ST over Piscataqua River carry?

About 9,730 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is One ST over Piscataqua River?

The structure is 289 ft (88 m) long with a longest span of 61 ft (18.6 m) and a deck 47 ft wide.

Who owns One ST over Piscataqua River?

It is owned by the State Highway Agency.