US Bridges

Rockwood RD over East Outlet Kennbec R.

Fair

Piscataquis County, Maine · Townline · Structure no. 3101

Built
1990
35 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
341 ft
3 main spans
Daily traffic
1,030
2016 count
Owner
State
State Highway Agency

About this bridge

Rockwood RD over East Outlet Kennbec R. is a steel continuous stringer/multi-beam or girder carrying Rockwood RD over East Outlet Kennbec R. in Piscataquis County, Maine. It was built in 1990, so it is 35 years old, younger 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 1,030 vehicles a day, roughly 5% of them trucks, projected to reach 1,545 by 2036. The structure is 341 ft (103.8 m) long and 34 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

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CarriesRockwood RD
CrossesEast Outlet Kennbec R.
LocationTownline
RouteState Highway 6
CountyPiscataquis County
StateMaine
Coordinates45.58368, -69.71948
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length341 ft (103.8 m)
Longest span124 ft (37.8 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,030 (2016)
Projected traffic1,545 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rockwood RD over East Outlet Kennbec R. built?

It was built in 1990, making it 35 years old in 2025.

What condition is Rockwood RD over East Outlet Kennbec R. 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 November 2023.

How much traffic does Rockwood RD over East Outlet Kennbec R. carry?

About 1,030 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Rockwood RD over East Outlet Kennbec R.?

The structure is 341 ft (103.8 m) long with a longest span of 124 ft (37.8 m) and a deck 34 ft wide.

Who owns Rockwood RD over East Outlet Kennbec R.?

It is owned by the State Highway Agency.