US Bridges

Vernon ST over Mill Brook

Fair

Oxford County, Maine · 2.2 MI Sly of Greenwood · Structure no. 3476

Built
1939
86 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
25 ft
1 main span
Daily traffic
356
2016 count
Owner
State
State Highway Agency

About this bridge

Vernon ST over Mill Brook is a concrete slab carrying Vernon ST over Mill Brook in Oxford County, Maine. It was built in 1939, so it is 86 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 356 vehicles a day, roughly 5% of them trucks, projected to reach 570 by 2036. The structure is 25 ft (7.5 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesVernon ST
CrossesMill Brook
Location2.2 MI Sly of Greenwood
RouteCity Street 0
CountyOxford County
StateMaine
Coordinates44.34227, -70.7612
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 protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating107.1 US tons
Inventory rating102.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length25 ft (7.5 m)
Longest span20 ft (6 m)
Deck width25 ft (7.6 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic356 (2016)
Projected traffic570 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Vernon ST over Mill Brook built?

It was built in 1939, making it 86 years old in 2025.

What condition is Vernon ST over Mill 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 October 2023.

How much traffic does Vernon ST over Mill Brook carry?

About 356 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Vernon ST over Mill Brook?

The structure is 25 ft (7.5 m) long with a longest span of 20 ft (6 m) and a deck 25 ft wide.

Who owns Vernon ST over Mill Brook?

It is owned by the State Highway Agency.