US Bridges

I-495 over Lambert St/Falmouth Spur

Fair

Cumberland County, Maine · 0.195 MI N of Davis Farm · Structure no. 0363

Built
1956
69 years old, rebuilt 2009
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
113 ft
3 main spans
Daily traffic
5,770
2016 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-495 over Lambert St/Falmouth Spur is a steel continuous stringer/multi-beam or girder carrying I-495 over Lambert St/Falmouth Spur in Cumberland County, Maine. It was built in 1956 and reconstructed in 2009, 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 5,770 vehicles a day, roughly 10% of them trucks, projected to reach 8,078 by 2036. The structure is 113 ft (34.4 m) long and 90 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-495
CrossesLambert St/Falmouth Spur
Location0.195 MI N of Davis Farm
CountyCumberland County
StateMaine
Coordinates43.72299, -70.30078
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length113 ft (34.4 m)
Longest span51 ft (15.5 m)
Deck width90 ft (27.4 m)
Roadway width83 ft (25.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,770 (2016)
Projected traffic8,078 by 2036
Trucks10%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-495 over Lambert St/Falmouth Spur built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2009.

What condition is I-495 over Lambert St/Falmouth Spur 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-495 over Lambert St/Falmouth Spur carry?

About 5,770 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is I-495 over Lambert St/Falmouth Spur?

The structure is 113 ft (34.4 m) long with a longest span of 51 ft (15.5 m) and a deck 90 ft wide.

Who owns I-495 over Lambert St/Falmouth Spur?

It is owned by the State Toll Authority.