US Bridges

Clark RD over Plymouth Pond

Fair

Penobscot County, Maine · 200 Ft SW of RTE 7 & 69 · Structure no. 5732

Built
1958
67 years old, rebuilt 2011
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
44 ft
1 main span
Daily traffic
637
2016 count
Owner
State
State Highway Agency

About this bridge

Clark RD over Plymouth Pond is a concrete tee beam carrying Clark RD over Plymouth Pond in Penobscot County, Maine. It was built in 1958 and reconstructed in 2011, so it is 67 years old, older 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 5 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 637 vehicles a day, roughly 5% of them trucks, projected to reach 1,019 by 2036. The structure is 44 ft (13.3 m) long and 31 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesClark RD
CrossesPlymouth Pond
Location200 Ft SW of RTE 7 & 69
RouteCity Street 0
CountyPenobscot County
StateMaine
Coordinates44.76637, -69.21017
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 rating41.4 US tons
Inventory rating32.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length44 ft (13.3 m)
Longest span40 ft (12.3 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic637 (2016)
Projected traffic1,019 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Clark RD over Plymouth Pond built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2011.

What condition is Clark RD over Plymouth Pond 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 July 2023.

How much traffic does Clark RD over Plymouth Pond carry?

About 637 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Clark RD over Plymouth Pond?

The structure is 44 ft (13.3 m) long with a longest span of 40 ft (12.3 m) and a deck 31 ft wide.

Who owns Clark RD over Plymouth Pond?

It is owned by the State Highway Agency.