US Bridges

Coffin ST over Piscataquis River

Good

Penobscot County, Maine · .1 MI NE RTE 6 · Structure no. 3040

Built
2012
13 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
590 ft
3 main spans
Daily traffic
3,044
2016 count
Owner
State
State Highway Agency

About this bridge

Coffin ST over Piscataquis River is a steel continuous stringer/multi-beam or girder carrying Coffin ST over Piscataquis River in Penobscot County, Maine. It was built in 2012, so it is 13 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,044 vehicles a day, roughly 5% of them trucks, projected to reach 4,262 by 2036. The structure is 590 ft (179.7 m) long and 42 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesCoffin ST
CrossesPiscataquis River
Location.1 MI NE RTE 6
RouteCounty Highway 0
CountyPenobscot County
StateMaine
Coordinates45.2396, -68.65879
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, precast panels
Main spans3
Design loadGreater than HL 93
Structure length590 ft (179.7 m)
Longest span232 ft (70.7 m)
Deck width42 ft (12.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic3,044 (2016)
Projected traffic4,262 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed100 mi (161 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 Coffin ST over Piscataquis River built?

It was built in 2012, making it 13 years old in 2025.

What condition is Coffin ST over Piscataquis 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 July 2023.

How much traffic does Coffin ST over Piscataquis River carry?

About 3,044 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Coffin ST over Piscataquis River?

The structure is 590 ft (179.7 m) long with a longest span of 232 ft (70.7 m) and a deck 42 ft wide.

Who owns Coffin ST over Piscataquis River?

It is owned by the State Highway Agency.