US Bridges

Inv 1301439 RD over Fox Islands Thoroughfare

Fair

Knox County, Maine · Atlantic Ocean · Structure no. 6344

Built
2012
13 years old
Condition
Fair
inspected June 2024
Type
Movable - Lift
Steel
Length
70 ft
1 main span
Daily traffic
776
2016 count
Owner
State
State Highway Agency

About this bridge

Inv 1301439 RD over Fox Islands Thoroughfare is a steel movable - lift carrying Inv 1301439 RD over Fox Islands Thoroughfare in Knox 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 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 776 vehicles a day, roughly 5% of them trucks, projected to reach 1,242 by 2036. The structure is 70 ft (21.3 m) long and 11 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesInv 1301439 RD
CrossesFox Islands Thoroughfare
LocationAtlantic Ocean
RouteCounty Highway 0
CountyKnox County
StateMaine
Coordinates44.12667, -68.87311
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.
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 protection7 GoodSome minor problems.
Last inspectionJune 2024
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 rating52.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeMovable - Lift
MaterialSteel
DeckSteel plate
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span70 ft (21.3 m)
Deck width11 ft (3.4 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deck15 ft (4.4 m)

Traffic and service

Average daily traffic776 (2016)
Projected traffic1,242 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 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 Inv 1301439 RD over Fox Islands Thoroughfare built?

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

What condition is Inv 1301439 RD over Fox Islands Thoroughfare 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 June 2024.

How much traffic does Inv 1301439 RD over Fox Islands Thoroughfare carry?

About 776 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Inv 1301439 RD over Fox Islands Thoroughfare?

The structure is 70 ft (21.3 m) long with a longest span of 70 ft (21.3 m) and a deck 11 ft wide.

Who owns Inv 1301439 RD over Fox Islands Thoroughfare?

It is owned by the State Highway Agency.