US Bridges

I 95 SB over Stillwater Avenue

Poor

Penobscot County, Maine · 0.8 MI N JCT RTE 15 · Structure no. 1427

Built
1960
65 years old
Condition
Poor
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
218 ft
3 main spans
Daily traffic
25,150
2016 count
Owner
State
State Highway Agency

About this bridge

I 95 SB over Stillwater Avenue is a steel stringer/multi-beam or girder carrying I 95 SB over Stillwater Avenue in Penobscot County, Maine. It was built in 1960, so it is 65 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 25,150 vehicles a day, roughly 5% of them trucks, projected to reach 35,210 by 2036. The structure is 218 ft (66.3 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 95 SB
CrossesStillwater Avenue
Location0.8 MI N JCT RTE 15
RouteState Highway 95
CountyPenobscot County
StateMaine
Coordinates44.82413, -68.75881
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating53.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length218 ft (66.3 m)
Longest span92 ft (27.9 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,150 (2016)
Projected traffic35,210 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 Stillwater Avenue built?

It was built in 1960, making it 65 years old in 2025.

What condition is I 95 SB over Stillwater 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 Stillwater Avenue carry?

About 25,150 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is I 95 SB over Stillwater Avenue?

The structure is 218 ft (66.3 m) long with a longest span of 92 ft (27.9 m) and a deck 35 ft wide.

Who owns I 95 SB over Stillwater Avenue?

It is owned by the State Highway Agency.