US Bridges

Main ST over East Machias River

Fair

Washington County, Maine · At JCT RTE 191 · Structure no. 2682

Built
1902
123 years old, rebuilt 1998
Condition
Fair
inspected September 2024
Type
Arch - Deck
Concrete Continuous
Length
139 ft
3 main spans
Daily traffic
2,979
2016 count
Owner
State
State Highway Agency

About this bridge

Main ST over East Machias River is a concrete continuous arch - deck carrying Main ST over East Machias River in Washington County, Maine. It was built in 1902 and reconstructed in 1998, so it is 123 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 2,979 vehicles a day, roughly 5% of them trucks, projected to reach 4,171 by 2036. The structure is 139 ft (42.4 m) long and 50 ft wide. If it were closed, the detour would be 62.8 mi (101 km).

CarriesMain ST
CrossesEast Machias River
LocationAt JCT RTE 191
RouteState Highway 1
StateMaine
Coordinates44.73914, -67.38901
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating106.8 US tons
Inventory rating71.1 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length139 ft (42.4 m)
Longest span39 ft (11.9 m)
Deck width50 ft (15.1 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,979 (2016)
Projected traffic4,171 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.8 mi (101 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Main ST over East Machias River built?

It was built in 1902, making it 123 years old in 2025. It was reconstructed in 1998.

What condition is Main ST over East Machias 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 September 2024.

How much traffic does Main ST over East Machias River carry?

About 2,979 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Main ST over East Machias River?

The structure is 139 ft (42.4 m) long with a longest span of 39 ft (11.9 m) and a deck 50 ft wide.

Who owns Main ST over East Machias River?

It is owned by the State Highway Agency.