US Bridges

Arrowsic RD over Sasonoa River

Fair

Sagadahoc County, Maine · 0.2 MI Sly of JCT US1 · Structure no. 2026

Built
1950
75 years old, rebuilt 1985
Condition
Fair
inspected September 2024
Type
Truss - Thru
Steel
Length
838 ft
3 main spans
Daily traffic
3,280
2016 count
Owner
State
State Highway Agency

About this bridge

Arrowsic RD over Sasonoa River is a steel truss - thru carrying Arrowsic RD over Sasonoa River in Sagadahoc County, Maine. It was built in 1950 and reconstructed in 1985, so it is 75 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 3,280 vehicles a day, roughly 5% of them trucks, projected to reach 4,592 by 2036. The structure is 838 ft (255.4 m) long and 28 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

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CarriesArrowsic RD
CrossesSasonoa River
Location0.2 MI Sly of JCT US1
RouteCounty Highway 127
CountySagadahoc County
StateMaine
Coordinates43.90922, -69.80013
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
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 within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+4 approach)
Design loadH 20
Structure length838 ft (255.4 m)
Longest span300 ft (91.4 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck15 ft (4.6 m)

Traffic and service

Average daily traffic3,280 (2016)
Projected traffic4,592 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Arrowsic RD over Sasonoa River built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1985.

What condition is Arrowsic RD over Sasonoa 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 Arrowsic RD over Sasonoa River carry?

About 3,280 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Arrowsic RD over Sasonoa River?

The structure is 838 ft (255.4 m) long with a longest span of 300 ft (91.4 m) and a deck 28 ft wide.

Who owns Arrowsic RD over Sasonoa River?

It is owned by the State Highway Agency.