US Bridges

Main ST over Mattawamkeag River

Good

Penobscot County, Maine · .2 Mi.S. #157 · Structure no. 2522

Built
2023
2 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
405 ft
3 main spans
Daily traffic
2,081
2016 count
Owner
State
State Highway Agency

About this bridge

Main ST over Mattawamkeag River is a steel stringer/multi-beam or girder carrying Main ST over Mattawamkeag River in Penobscot County, Maine. It was built in 2023, so it is 2 years old, younger than the Maine average of 53.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,081 vehicles a day, roughly 5% of them trucks, projected to reach 2,913 by 2036. The structure is 405 ft (123.3 m) long and 38 ft wide. If it were closed, the detour would be 32.9 mi (53 km).

Location

Open in Google Maps
CarriesMain ST
CrossesMattawamkeag River
Location.2 Mi.S. #157
RouteState Highway 2
CountyPenobscot County
StateMaine
Coordinates45.51865, -68.35354
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
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 rating60.4 US tons
Inventory rating46.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadGreater than HL 93
Structure length405 ft (123.3 m)
Longest span149 ft (45.4 m)
Deck width38 ft (11.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,081 (2016)
Projected traffic2,913 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed32.9 mi (53 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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 Main ST over Mattawamkeag River built?

It was built in 2023, making it 2 years old in 2025.

What condition is Main ST over Mattawamkeag River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Main ST over Mattawamkeag River carry?

About 2,081 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Main ST over Mattawamkeag River?

The structure is 405 ft (123.3 m) long with a longest span of 149 ft (45.4 m) and a deck 38 ft wide.

Who owns Main ST over Mattawamkeag River?

It is owned by the State Highway Agency.