US Bridges

I-95 over Piscataqua Tributary

Fair

Cumberland County, Maine · Mile Marker 55.6 · Structure no. 6448

Built
1956
69 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
14,020
2016 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-95 over Piscataqua Tributary is a concrete culvert carrying I-95 over Piscataqua Tributary in Cumberland County, Maine. It was built in 1956, so it is 69 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 6 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 14,020 vehicles a day, roughly 5% of them trucks, projected to reach 19,628 by 2036. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-95
CrossesPiscataqua Tributary
LocationMile Marker 55.6
RouteInterstate 95
CountyCumberland County
StateMaine
Coordinates43.77496, -70.31313
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating36.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length25 ft (7.6 m)
Longest span12 ft (3.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,020 (2016)
Projected traffic19,628 by 2036
Trucks5%
Lanes on structure4
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 over Piscataqua Tributary built?

It was built in 1956, making it 69 years old in 2025.

What condition is I-95 over Piscataqua Tributary 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 June 2023.

How much traffic does I-95 over Piscataqua Tributary carry?

About 14,020 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is I-95 over Piscataqua Tributary?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.8 m).

Who owns I-95 over Piscataqua Tributary?

It is owned by the State Toll Authority.