US Bridges

Wilsons Mills over Richardson Pd Outlet

Fair

Oxford County, Maine · .7 MI Nly Lincoln Plt. · Structure no. 3540

Built
1978
47 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
310
2016 count
Owner
State
State Highway Agency

About this bridge

Wilsons Mills over Richardson Pd Outlet is a concrete slab carrying Wilsons Mills over Richardson Pd Outlet in Oxford County, Maine. It was built in 1978, so it is 47 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 310 vehicles a day, roughly 5% of them trucks, projected to reach 496 by 2036. The structure is 33 ft (10.2 m) long and 29 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

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CarriesWilsons Mills
CrossesRichardson Pd Outlet
Location.7 MI Nly Lincoln Plt.
RouteState Highway 16
CountyOxford County
StateMaine
Coordinates44.91886, -70.91622
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating43.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length33 ft (10.2 m)
Longest span30 ft (9.1 m)
Deck width29 ft (8.7 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic310 (2016)
Projected traffic496 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 Wilsons Mills over Richardson Pd Outlet built?

It was built in 1978, making it 47 years old in 2025.

What condition is Wilsons Mills over Richardson Pd Outlet 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 July 2024.

How much traffic does Wilsons Mills over Richardson Pd Outlet carry?

About 310 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Wilsons Mills over Richardson Pd Outlet?

The structure is 33 ft (10.2 m) long with a longest span of 30 ft (9.1 m) and a deck 29 ft wide.

Who owns Wilsons Mills over Richardson Pd Outlet?

It is owned by the State Highway Agency.