US Bridges

Main ST over Saco River

Good

York County, Maine · .4 MI Sly JCT RTE 113 · Structure no. 3328

Built
2014
11 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
196 ft
1 main span
Daily traffic
1,880
2016 count
Owner
State
State Highway Agency

About this bridge

Main ST over Saco River is a steel stringer/multi-beam or girder carrying Main ST over Saco River in York County, Maine. It was built in 2014, so it is 11 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 1,880 vehicles a day, roughly 5% of them trucks, projected to reach 2,820 by 2036. The structure is 196 ft (59.8 m) long and 36 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesMain ST
CrossesSaco River
Location.4 MI Sly JCT RTE 113
RouteState Highway 11
StateMaine
Coordinates43.78959, -70.65789
Functional classRural Major 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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating53.6 US tons
Inventory rating41.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length196 ft (59.8 m)
Longest span190 ft (57.9 m)
Deck width36 ft (11 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,880 (2016)
Projected traffic2,820 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 2014, making it 11 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 March 2024.

How much traffic does Main ST over Saco River carry?

About 1,880 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Main ST over Saco River?

The structure is 196 ft (59.8 m) long with a longest span of 190 ft (57.9 m) and a deck 36 ft wide.

Who owns Main ST over Saco River?

It is owned by the State Highway Agency.