US Bridges

Low RD over Lunt Harbor

Fair

Hancock County, Maine · _ · Structure no. 6340

Built
1988
37 years old
Condition
Fair
inspected November 2023
Type
Movable - Lift
Steel
Length
48 ft
1 main span
Daily traffic
528
2016 count
Owner
State
State Highway Agency

About this bridge

Low RD over Lunt Harbor is a steel movable - lift carrying Low RD over Lunt Harbor in Hancock County, Maine. It was built in 1988, so it is 37 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 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 528 vehicles a day, roughly 5% of them trucks, projected to reach 845 by 2036. The structure is 48 ft (14.5 m) long and 10 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesLow RD
CrossesLunt Harbor
Location_
RouteCounty Highway 0
CountyHancock County
StateMaine
Coordinates44.12142, -68.36225
Functional classRural Minor 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
Deck7 GoodSome minor problems.
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeMovable - Lift
MaterialSteel
DeckOpen grating
Main spans1
Design loadHS 20
Structure length48 ft (14.5 m)
Longest span38 ft (11.6 m)
Deck width10 ft (3.2 m)
Roadway width10 ft (2.9 m)
Vertical clearance over deck20 ft (6 m)

Traffic and service

Average daily traffic528 (2016)
Projected traffic845 by 2036
Trucks5%
Lanes on structure1
Traffic directionOne-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 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 Low RD over Lunt Harbor built?

It was built in 1988, making it 37 years old in 2025.

What condition is Low RD over Lunt Harbor 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 Low RD over Lunt Harbor carry?

About 528 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Low RD over Lunt Harbor?

The structure is 48 ft (14.5 m) long with a longest span of 38 ft (11.6 m) and a deck 10 ft wide.

Who owns Low RD over Lunt Harbor?

It is owned by the State Highway Agency.