US Bridges

Skidmore RD over Medomak River

Fair

Knox County, Maine · 1.5 MI N of Old Union RD · Structure no. 0578

Built
2001
24 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
69 ft
1 main span
Daily traffic
100
2016 count
Owner
State
State Highway Agency

About this bridge

Skidmore RD over Medomak River is a steel stringer/multi-beam or girder carrying Skidmore RD over Medomak River in Knox County, Maine. It was built in 2001, so it is 24 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 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2036. The structure is 69 ft (20.9 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSkidmore RD
CrossesMedomak River
Location1.5 MI N of Old Union RD
RouteCity Street 0
StateMaine
Coordinates44.27039, -69.33375
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83.9 US tons
Inventory rating65 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadGreater than HL 93
Structure length69 ft (20.9 m)
Longest span65 ft (19.8 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2016)
Projected traffic160 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Skidmore RD over Medomak River built?

It was built in 2001, making it 24 years old in 2025.

What condition is Skidmore RD over Medomak 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 April 2024.

How much traffic does Skidmore RD over Medomak River carry?

About 100 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Skidmore RD over Medomak River?

The structure is 69 ft (20.9 m) long with a longest span of 65 ft (19.8 m) and a deck 24 ft wide.

Who owns Skidmore RD over Medomak River?

It is owned by the State Highway Agency.