US Bridges

Intervale RD over Royal River

Fair

Cumberland County, Maine · 2.8 MI Sly JCT 4 100&200 · Structure no. 0246

Built
1979
46 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
76 ft
1 main span
Daily traffic
2,146
2016 count
Owner
State
State Highway Agency

About this bridge

Intervale RD over Royal River is a steel stringer/multi-beam or girder carrying Intervale RD over Royal River in Cumberland County, Maine. It was built in 1979, so it is 46 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 2,146 vehicles a day, roughly 5% of them trucks, projected to reach 3,004 by 2036. The structure is 76 ft (23.1 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesIntervale RD
CrossesRoyal River
Location2.8 MI Sly JCT 4 100&200
RouteCounty Highway 231
CountyCumberland County
StateMaine
Coordinates43.95541, -70.26728
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 protection7 GoodSome minor problems.
Last inspectionJuly 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.6 US tons
Inventory rating76.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length76 ft (23.1 m)
Longest span70 ft (21.3 m)
Deck width37 ft (11.2 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,146 (2016)
Projected traffic3,004 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Intervale RD over Royal River built?

It was built in 1979, making it 46 years old in 2025.

What condition is Intervale RD over Royal 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 July 2023.

How much traffic does Intervale RD over Royal River carry?

About 2,146 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Intervale RD over Royal River?

The structure is 76 ft (23.1 m) long with a longest span of 70 ft (21.3 m) and a deck 37 ft wide.

Who owns Intervale RD over Royal River?

It is owned by the State Highway Agency.