US Bridges

Poplar ST over Seboeis Stream

Fair

Penobscot County, Maine · 2.5 MI No Townline · Structure no. 3889

Built
1965
60 years old
Condition
Fair
inspected September 2023
Type
Culvert
Steel
Length
21 ft
1 main span
Daily traffic
390
2016 count
Owner
State
State Highway Agency

About this bridge

Poplar ST over Seboeis Stream is a steel culvert carrying Poplar ST over Seboeis Stream in Penobscot County, Maine. It was built in 1965, so it is 60 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 390 vehicles a day, roughly 5% of them trucks, projected to reach 624 by 2036. The structure is 21 ft (6.5 m) long. If it were closed, the detour would be 39.8 mi (64 km).

Location

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CarriesPoplar ST
CrossesSeboeis Stream
Location2.5 MI No Townline
RouteState Highway 11
CountyPenobscot County
StateMaine
Coordinates45.53814, -68.87921
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.2 US tons
Inventory rating25.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length21 ft (6.5 m)
Longest span21 ft (6.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic390 (2016)
Projected traffic624 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 Poplar ST over Seboeis Stream built?

It was built in 1965, making it 60 years old in 2025.

What condition is Poplar ST over Seboeis Stream 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 Poplar ST over Seboeis Stream carry?

About 390 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Poplar ST over Seboeis Stream?

The structure is 21 ft (6.5 m) long with a longest span of 21 ft (6.5 m).

Who owns Poplar ST over Seboeis Stream?

It is owned by the State Highway Agency.