US Bridges

I-95(NB) over Mousam River

Fair

York County, Maine · 0.545 MI W of SR 35 · Structure no. 1331

Built
1948
77 years old, rebuilt 1989
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
330 ft
3 main spans
Daily traffic
25,580
2016 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-95(NB) over Mousam River is a steel continuous stringer/multi-beam or girder carrying I-95(NB) over Mousam River in York County, Maine. It was built in 1948 and reconstructed in 1989, so it is 77 years old, older than the Maine average of 53.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 25,580 vehicles a day, roughly 10% of them trucks, projected to reach 35,812 by 2036. The structure is 330 ft (100.6 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-95(NB)
CrossesMousam River
Location0.545 MI W of SR 35
RouteInterstate 95
CountyYork County
StateMaine
Coordinates43.40017, -70.56521
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length330 ft (100.6 m)
Longest span130 ft (39.6 m)
Deck width66 ft (20 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,580 (2016)
Projected traffic35,812 by 2036
Trucks10%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn an Interstate toll segment under Secretarial agreement
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-95(NB) over Mousam River built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1989.

What condition is I-95(NB) over Mousam River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does I-95(NB) over Mousam River carry?

About 25,580 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is I-95(NB) over Mousam River?

The structure is 330 ft (100.6 m) long with a longest span of 130 ft (39.6 m) and a deck 66 ft wide.

Who owns I-95(NB) over Mousam River?

It is owned by the State Toll Authority.