US Bridges

Mill Hill RD over Stony Brook

Fair

Oxford County, Maine · 1.2 MI Nly of Route 26 · Structure no. 6151

Built
1968
57 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
110
2016 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Mill Hill RD over Stony Brook is a concrete slab carrying Mill Hill RD over Stony Brook in Oxford County, Maine. It was built in 1968, so it is 57 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 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 110 vehicles a day, roughly 5% of them trucks, projected to reach 176 by 2036. The structure is 24 ft (7.4 m) long and 28 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesMill Hill RD
CrossesStony Brook
Location1.2 MI Nly of Route 26
RouteCity Street 0
CountyOxford County
StateMaine
Coordinates44.71061, -71.01336
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating43.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length24 ft (7.4 m)
Longest span20 ft (6.1 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2016)
Projected traffic176 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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Mill Hill RD over Stony Brook built?

It was built in 1968, making it 57 years old in 2025.

What condition is Mill Hill RD over Stony Brook 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 Mill Hill RD over Stony Brook carry?

About 110 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Mill Hill RD over Stony Brook?

The structure is 24 ft (7.4 m) long with a longest span of 20 ft (6.1 m) and a deck 28 ft wide.

Who owns Mill Hill RD over Stony Brook?

It is owned by the Town or Township Highway Agency.