US Bridges

I 95 SB over Somerset Avenue

Poor

Somerset County, Maine · I-95 Interchange 150 · Structure no. 1447

Built
1964
61 years old, rebuilt 1989
Condition
Poor
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
147 ft
3 main spans
Daily traffic
8,190
2016 count
Owner
State
State Highway Agency

About this bridge

I 95 SB over Somerset Avenue is a steel continuous stringer/multi-beam or girder carrying I 95 SB over Somerset Avenue in Somerset County, Maine. It was built in 1964 and reconstructed in 1989, so it is 61 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 8,190 vehicles a day, roughly 5% of them trucks, projected to reach 11,466 by 2036. The structure is 147 ft (44.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 95 SB
CrossesSomerset Avenue
LocationI-95 Interchange 150
RouteState Highway 95
StateMaine
Coordinates44.78481, -69.40436
Functional classRural Principal Arterial - Interstate

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.
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.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating31.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length147 ft (44.8 m)
Longest span63 ft (19.2 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,190 (2016)
Projected traffic11,466 by 2036
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 95 SB over Somerset Avenue built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1989.

What condition is I 95 SB over Somerset Avenue 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 December 2024.

How much traffic does I 95 SB over Somerset Avenue carry?

About 8,190 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is I 95 SB over Somerset Avenue?

The structure is 147 ft (44.8 m) long with a longest span of 63 ft (19.2 m) and a deck 43 ft wide.

Who owns I 95 SB over Somerset Avenue?

It is owned by the State Highway Agency.