US Bridges

Moosehead Trl over Martin Stream

Fair

Penobscot County, Maine · 0.7 MI S of Plymouth · Structure no. 3127

Built
1958
67 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
84 ft
1 main span
Daily traffic
1,103
2016 count
Owner
State
State Highway Agency

About this bridge

Moosehead Trl over Martin Stream is a steel stringer/multi-beam or girder carrying Moosehead Trl over Martin Stream in Penobscot County, Maine. It was built in 1958, so it is 67 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 1,103 vehicles a day, roughly 5% of them trucks, projected to reach 1,655 by 2036. The structure is 84 ft (25.6 m) long and 34 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesMoosehead Trl
CrossesMartin Stream
Location0.7 MI S of Plymouth
RouteState Highway 7
CountyPenobscot County
StateMaine
Coordinates44.72525, -69.17396
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length84 ft (25.6 m)
Longest span80 ft (24.4 m)
Deck width34 ft (10.4 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,103 (2016)
Projected traffic1,655 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

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 Moosehead Trl over Martin Stream built?

It was built in 1958, making it 67 years old in 2025.

What condition is Moosehead Trl over Martin Stream 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 July 2024.

How much traffic does Moosehead Trl over Martin Stream carry?

About 1,103 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Moosehead Trl over Martin Stream?

The structure is 84 ft (25.6 m) long with a longest span of 80 ft (24.4 m) and a deck 34 ft wide.

Who owns Moosehead Trl over Martin Stream?

It is owned by the State Highway Agency.