US Bridges

Canaan RD over Kennebec River

Fair

Kennebec County, Maine · 0.1 MI E of JCT RTE 201 · Structure no. 3389

Built
1983
42 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
647 ft
4 main spans
Daily traffic
3,593
2016 count
Owner
State
State Highway Agency

About this bridge

Canaan RD over Kennebec River is a steel continuous stringer/multi-beam or girder carrying Canaan RD over Kennebec River in Kennebec County, Maine. It was built in 1983, so it is 42 years old, younger than the Maine average of 53.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,593 vehicles a day, roughly 5% of them trucks, projected to reach 5,030 by 2036. The structure is 647 ft (197.2 m) long and 37 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

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CarriesCanaan RD
CrossesKennebec River
Location0.1 MI E of JCT RTE 201
RouteState Highway 23
CountyKennebec County
StateMaine
Coordinates44.68571, -69.63037
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to 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 rating54.7 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length647 ft (197.2 m)
Longest span178 ft (54.3 m)
Deck width37 ft (11.2 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,593 (2016)
Projected traffic5,030 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 Canaan RD over Kennebec River built?

It was built in 1983, making it 42 years old in 2025.

What condition is Canaan RD over Kennebec River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does Canaan RD over Kennebec River carry?

About 3,593 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Canaan RD over Kennebec River?

The structure is 647 ft (197.2 m) long with a longest span of 178 ft (54.3 m) and a deck 37 ft wide.

Who owns Canaan RD over Kennebec River?

It is owned by the State Highway Agency.