US Bridges

Riverside RD over Carrabasset River

Poor

Franklin County, Maine · .1 MI E 27 · Structure no. 5852

Built
1916
109 years old, rebuilt 1961
Condition
Poor
inspected November 2024
Type
Arch - Deck
Concrete
Length
176 ft
1 main span
Daily traffic
2,515
2016 count
Owner
State
State Highway Agency

About this bridge

Riverside RD over Carrabasset River is a concrete arch - deck carrying Riverside RD over Carrabasset River in Franklin County, Maine. It was built in 1916 and reconstructed in 1961, so it is 109 years old, older than the Maine average of 53.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,515 vehicles a day, roughly 5% of them trucks, projected to reach 3,521 by 2036. The structure is 176 ft (53.6 m) long and 36 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesRiverside RD
CrossesCarrabasset River
Location.1 MI E 27
RouteState Highway 16
StateMaine
Coordinates44.95944, -70.1544
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating37.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length176 ft (53.6 m)
Longest span174 ft (53 m)
Deck width36 ft (11 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,515 (2016)
Projected traffic3,521 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.9 mi (32 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Riverside RD over Carrabasset River built?

It was built in 1916, making it 109 years old in 2025. It was reconstructed in 1961.

What condition is Riverside RD over Carrabasset River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does Riverside RD over Carrabasset River carry?

About 2,515 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Riverside RD over Carrabasset River?

The structure is 176 ft (53.6 m) long with a longest span of 174 ft (53 m) and a deck 36 ft wide.

Who owns Riverside RD over Carrabasset River?

It is owned by the State Highway Agency.