US Bridges

Main RD over Passadumkeag River

Fair

Penobscot County, Maine · .2 MI W Townline · Structure no. 3918

Built
1968
57 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
47 ft
1 main span
Daily traffic
195
2016 count
Owner
State
State Highway Agency

About this bridge

Main RD over Passadumkeag River is a steel stringer/multi-beam or girder carrying Main RD over Passadumkeag River in Penobscot County, Maine. It was built in 1968, so it is 57 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 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 195 vehicles a day, roughly 5% of them trucks, projected to reach 312 by 2036. The structure is 47 ft (14.2 m) long and 25 ft wide. If it were closed, the detour would be 100 mi (161 km).

CarriesMain RD
CrossesPassadumkeag River
Location.2 MI W Townline
RouteCity Street 0
StateMaine
Coordinates45.16571, -68.29308
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
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 inspectionDecember 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating31.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length47 ft (14.2 m)
Longest span42 ft (12.8 m)
Deck width25 ft (7.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic195 (2016)
Projected traffic312 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 Main RD over Passadumkeag River built?

It was built in 1968, making it 57 years old in 2025.

What condition is Main RD over Passadumkeag 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 December 2024.

How much traffic does Main RD over Passadumkeag River carry?

About 195 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Main RD over Passadumkeag River?

The structure is 47 ft (14.2 m) long with a longest span of 42 ft (12.8 m) and a deck 25 ft wide.

Who owns Main RD over Passadumkeag River?

It is owned by the State Highway Agency.