US Bridges

Route 108 over Mill Canal (andro River)

Fair

Oxford County, Maine · .2 MI E US 2 · Structure no. 5619

Built
1954
71 years old, rebuilt 2016
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
270 ft
3 main spans
Daily traffic
7,389
2016 count
Owner
State
State Highway Agency

About this bridge

Route 108 over Mill Canal (andro River) is a steel continuous stringer/multi-beam or girder carrying Route 108 over Mill Canal (andro River) in Oxford County, Maine. It was built in 1954 and reconstructed in 2016, so it is 71 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 7,389 vehicles a day, roughly 5% of them trucks, projected to reach 10,345 by 2036. The structure is 270 ft (82.3 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRoute 108
CrossesMill Canal (andro River)
Location.2 MI E US 2
RouteState Highway 108
StateMaine
Coordinates44.54434, -70.54421
Functional classUrban Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating59.6 US tons
Inventory rating46.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadGreater than HL 93
Structure length270 ft (82.3 m)
Longest span100 ft (30.5 m)
Deck width42 ft (12.9 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,389 (2016)
Projected traffic10,345 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Route 108 over Mill Canal (andro River) built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2016.

What condition is Route 108 over Mill Canal (andro River) 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 December 2024.

How much traffic does Route 108 over Mill Canal (andro River) carry?

About 7,389 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Route 108 over Mill Canal (andro River)?

The structure is 270 ft (82.3 m) long with a longest span of 100 ft (30.5 m) and a deck 42 ft wide.

Who owns Route 108 over Mill Canal (andro River)?

It is owned by the State Highway Agency.