US Bridges

Bridge ST over Royal River

Fair

Cumberland County, Maine · 0.2 MI NE JCT RTE 115 · Structure no. 3983

Built
1948
77 years old, rebuilt 2017
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
184 ft
3 main spans
Daily traffic
826
2016 count
Owner
State
State Highway Agency

About this bridge

Bridge ST over Royal River is a steel stringer/multi-beam or girder carrying Bridge ST over Royal River in Cumberland County, Maine. It was built in 1948 and reconstructed in 2017, so it is 77 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 5 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 826 vehicles a day, roughly 5% of them trucks, projected to reach 1,322 by 2036. The structure is 184 ft (56 m) long and 26 ft wide.

Location

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CarriesBridge ST
CrossesRoyal River
Location0.2 MI NE JCT RTE 115
RouteCity Street 0
CountyCumberland County
StateMaine
Coordinates43.80128, -70.18152
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating33.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadH 15
Structure length184 ft (56 m)
Longest span59 ft (18 m)
Deck width26 ft (7.8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic826 (2016)
Projected traffic1,322 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Bridge ST over Royal River built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 2017.

What condition is Bridge ST 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 August 2024.

How much traffic does Bridge ST over Royal River carry?

About 826 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Bridge ST over Royal River?

The structure is 184 ft (56 m) long with a longest span of 59 ft (18 m) and a deck 26 ft wide.

Who owns Bridge ST over Royal River?

It is owned by the State Highway Agency.