US Bridges

Grand Lake RD over Seboeis Stream

Fair

Penobscot County, Maine · 3.8 MI W Townline · Structure no. 6044

Built
1966
59 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
93 ft
1 main span
Daily traffic
196
2016 count
Owner
State
State Highway Agency

About this bridge

Grand Lake RD over Seboeis Stream is a steel stringer/multi-beam or girder carrying Grand Lake RD over Seboeis Stream in Penobscot County, Maine. It was built in 1966, so it is 59 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 196 vehicles a day, roughly 5% of them trucks, projected to reach 314 by 2036. The structure is 93 ft (28.3 m) long and 30 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesGrand Lake RD
CrossesSeboeis Stream
Location3.8 MI W Townline
RouteCounty Highway 0
CountyPenobscot County
StateMaine
Coordinates46.14301, -68.63356
Functional classRural Minor 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating51.8 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length93 ft (28.3 m)
Longest span88 ft (26.8 m)
Deck width30 ft (9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic196 (2016)
Projected traffic314 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 Grand Lake RD over Seboeis Stream built?

It was built in 1966, making it 59 years old in 2025.

What condition is Grand Lake RD 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 October 2024.

How much traffic does Grand Lake RD over Seboeis Stream carry?

About 196 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Grand Lake RD over Seboeis Stream?

The structure is 93 ft (28.3 m) long with a longest span of 88 ft (26.8 m) and a deck 30 ft wide.

Who owns Grand Lake RD over Seboeis Stream?

It is owned by the State Highway Agency.