US Bridges

School ST over Carrabasset River

Poor

Somerset County, Maine · 4 MI E JCT 27 · Structure no. 5131

Built
1923
102 years old
Condition
Poor
inspected July 2024
Type
Arch - Deck
Concrete
Length
304 ft
2 main spans
Daily traffic
653
2016 count
Owner
State
State Highway Agency

About this bridge

School ST over Carrabasset River is a concrete arch - deck carrying School ST over Carrabasset River in Somerset County, Maine. It was built in 1923, so it is 102 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 653 vehicles a day, roughly 5% of them trucks, projected to reach 1,045 by 2036. The structure is 304 ft (92.7 m) long and 23 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesSchool ST
CrossesCarrabasset River
Location4 MI E JCT 27
RouteCounty Highway 146
CountySomerset County
StateMaine
Coordinates44.89949, -70.02388
Functional classRural Major Collector

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckOther
Main spans2 (+1 approach)
Design loadH 20
Structure length304 ft (92.7 m)
Longest span120 ft (36.6 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic653 (2016)
Projected traffic1,045 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 School ST over Carrabasset River built?

It was built in 1923, making it 102 years old in 2025.

What condition is School ST 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 July 2024.

How much traffic does School ST over Carrabasset River carry?

About 653 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is School ST over Carrabasset River?

The structure is 304 ft (92.7 m) long with a longest span of 120 ft (36.6 m) and a deck 23 ft wide.

Who owns School ST over Carrabasset River?

It is owned by the State Highway Agency.