US Bridges

Dock Sq over Kennebunk River

Good

York County, Maine · 0.2 MI E of JCT RTE 35 · Structure no. 2230

Built
2017
8 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
110 ft
1 main span
Daily traffic
9,490
2016 count
Owner
State
State Highway Agency

About this bridge

Dock Sq over Kennebunk River is a concrete continuous box beam or girders - multiple carrying Dock Sq over Kennebunk River in York County, Maine. It was built in 2017, so it is 8 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 9,490 vehicles a day, roughly 5% of them trucks, projected to reach 13,286 by 2036. The structure is 110 ft (33.5 m) long and 26 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

CarriesDock Sq
CrossesKennebunk River
Location0.2 MI E of JCT RTE 35
RouteCounty Highway 9
StateMaine
Coordinates43.36112, -70.4782
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating42.1 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadGreater than HL 93
Structure length110 ft (33.5 m)
Longest span89 ft (27 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,490 (2016)
Projected traffic13,286 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed26.1 mi (42 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Dock Sq over Kennebunk River built?

It was built in 2017, making it 8 years old in 2025.

What condition is Dock Sq over Kennebunk 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 September 2023.

How much traffic does Dock Sq over Kennebunk River carry?

About 9,490 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Dock Sq over Kennebunk River?

The structure is 110 ft (33.5 m) long with a longest span of 89 ft (27 m) and a deck 26 ft wide.

Who owns Dock Sq over Kennebunk River?

It is owned by the State Highway Agency.