US Bridges

Main ST over Aroostook River

Fair

Aroostook County, Maine · .1 MI S JCT 210&1 · Structure no. 2189

Built
1982
43 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
465 ft
3 main spans
Daily traffic
11,336
2016 count
Owner
State
State Highway Agency

About this bridge

Main ST over Aroostook River is a steel continuous stringer/multi-beam or girder carrying Main ST over Aroostook River in Aroostook County, Maine. It was built in 1982, so it is 43 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 11,336 vehicles a day, roughly 5% of them trucks, projected to reach 15,870 by 2036. The structure is 465 ft (141.7 m) long and 60 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

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CarriesMain ST
CrossesAroostook River
Location.1 MI S JCT 210&1
RouteState Highway 1
CountyAroostook County
StateMaine
Coordinates46.70333, -68.00841
Functional classUrban Other Principal Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating55 US tons
Inventory rating42.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length465 ft (141.7 m)
Longest span180 ft (54.9 m)
Deck width60 ft (18.3 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,336 (2016)
Projected traffic15,870 by 2036
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed100 mi (161 km)
TollOn a free road
National Highway SystemYes

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 ST over Aroostook River built?

It was built in 1982, making it 43 years old in 2025.

What condition is Main ST over Aroostook 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 April 2024.

How much traffic does Main ST over Aroostook River carry?

About 11,336 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Main ST over Aroostook River?

The structure is 465 ft (141.7 m) long with a longest span of 180 ft (54.9 m) and a deck 60 ft wide.

Who owns Main ST over Aroostook River?

It is owned by the State Highway Agency.