US Bridges

Mill RD over Back River (parsons Crk)

FairPosted for load

Lincoln County, Maine · 1.1 MI W of JCT RTE 27 · Structure no. 0613

Built
1960
65 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
1 main span
Daily traffic
210
2016 count
Owner
State
State Highway Agency

About this bridge

Mill RD over Back River (parsons Crk) is a steel stringer/multi-beam or girder carrying Mill RD over Back River (parsons Crk) in Lincoln County, Maine. It was built in 1960, so it is 65 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. Its operating status is: posted for load restriction.

It carries about 210 vehicles a day, roughly 5% of them trucks, projected to reach 336 by 2036. The structure is 39 ft (12 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMill RD
CrossesBack River (parsons Crk)
Location1.1 MI W of JCT RTE 27
RouteCity Street 0
CountyLincoln County
StateMaine
Coordinates43.95154, -69.64741
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.9 US tons
Inventory rating18.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length39 ft (12 m)
Longest span36 ft (11 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2016)
Projected traffic336 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Mill RD over Back River (parsons Crk) built?

It was built in 1960, making it 65 years old in 2025.

What condition is Mill RD over Back River (parsons Crk) 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 October 2023.

How much traffic does Mill RD over Back River (parsons Crk) carry?

About 210 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Mill RD over Back River (parsons Crk)?

The structure is 39 ft (12 m) long with a longest span of 36 ft (11 m) and a deck 22 ft wide.

Who owns Mill RD over Back River (parsons Crk)?

It is owned by the State Highway Agency.