US Bridges

Main ST over Saco River

Good

York County, Maine · Hollis - Buxton Tl · Structure no. 3333

Built
2016
9 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
489 ft
3 main spans
Daily traffic
4,031
2016 count
Owner
State
State Highway Agency

About this bridge

Main ST over Saco River is a steel continuous stringer/multi-beam or girder carrying Main ST over Saco River in York County, Maine. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,031 vehicles a day, roughly 5% of them trucks, projected to reach 5,643 by 2036. The structure is 489 ft (149 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMain ST
CrossesSaco River
LocationHollis - Buxton Tl
RouteCounty Highway 4
StateMaine
Coordinates43.61264, -70.55155
Functional classRural Minor Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating55.7 US tons
Inventory rating43.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadGreater than HL 93
Structure length489 ft (149 m)
Longest span180 ft (54.9 m)
Deck width38 ft (11.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,031 (2016)
Projected traffic5,643 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Main ST over Saco River built?

It was built in 2016, making it 9 years old in 2025.

What condition is Main ST over Saco 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 December 2024.

How much traffic does Main ST over Saco River carry?

About 4,031 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Main ST over Saco River?

The structure is 489 ft (149 m) long with a longest span of 180 ft (54.9 m) and a deck 38 ft wide.

Who owns Main ST over Saco River?

It is owned by the State Highway Agency.