US Bridges

I 95 SB over Main RD & Penobscot R.

Poor

Penobscot County, Maine · .2 Mi.S. #157 · Structure no. 1410

Built
1966
59 years old
Condition
Poor
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,055 ft
5 main spans
Daily traffic
3,270
2016 count
Owner
State
State Highway Agency

About this bridge

I 95 SB over Main RD & Penobscot R. is a steel continuous stringer/multi-beam or girder carrying I 95 SB over Main RD & Penobscot R. in Penobscot County, Maine. It was built in 1966, so it is 59 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 3,270 vehicles a day, roughly 5% of them trucks, projected to reach 4,578 by 2036. The structure is 1,055 ft (321.6 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 95 SB
CrossesMain RD & Penobscot R.
Location.2 Mi.S. #157
RouteState Highway 95
StateMaine
Coordinates45.60265, -68.52849
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating30.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length1,055 ft (321.6 m)
Longest span230 ft (70.1 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,270 (2016)
Projected traffic4,578 by 2036
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 95 SB over Main RD & Penobscot R. built?

It was built in 1966, making it 59 years old in 2025.

What condition is I 95 SB over Main RD & Penobscot R. 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 September 2023.

How much traffic does I 95 SB over Main RD & Penobscot R. carry?

About 3,270 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is I 95 SB over Main RD & Penobscot R.?

The structure is 1,055 ft (321.6 m) long with a longest span of 230 ft (70.1 m) and a deck 35 ft wide.

Who owns I 95 SB over Main RD & Penobscot R.?

It is owned by the State Highway Agency.