US Bridges

Alna RD over Mill(polly Clark) Creek

Fair

Lincoln County, Maine · 2.0 Mi. N. U.S. 1 · Structure no. 2607

Built
1936
89 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
1,751
2016 count
Owner
State
State Highway Agency

About this bridge

Alna RD over Mill(polly Clark) Creek is a concrete slab carrying Alna RD over Mill(polly Clark) Creek in Lincoln County, Maine. It was built in 1936, so it is 89 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 1,751 vehicles a day, roughly 5% of them trucks, projected to reach 2,627 by 2036. The structure is 24 ft (7.3 m) long and 27 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesAlna RD
CrossesMill(polly Clark) Creek
Location2.0 Mi. N. U.S. 1
RouteCounty Highway 218
StateMaine
Coordinates44.02761, -69.64714
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 rating36.8 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length24 ft (7.3 m)
Longest span20 ft (6.2 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,751 (2016)
Projected traffic2,627 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 Alna RD over Mill(polly Clark) Creek built?

It was built in 1936, making it 89 years old in 2025.

What condition is Alna RD over Mill(polly Clark) Creek 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 August 2024.

How much traffic does Alna RD over Mill(polly Clark) Creek carry?

About 1,751 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Alna RD over Mill(polly Clark) Creek?

The structure is 24 ft (7.3 m) long with a longest span of 20 ft (6.2 m) and a deck 27 ft wide.

Who owns Alna RD over Mill(polly Clark) Creek?

It is owned by the State Highway Agency.