US Bridges

Route 1 over Royal River

Fair

Cumberland County, Maine · 1 MI S I95 · Structure no. 3800

Built
1948
77 years old, rebuilt 2000
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
247 ft
3 main spans
Daily traffic
6,729
2016 count
Owner
State
State Highway Agency

About this bridge

Route 1 over Royal River is a steel stringer/multi-beam or girder carrying Route 1 over Royal River in Cumberland County, Maine. It was built in 1948 and reconstructed in 2000, 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 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 6,729 vehicles a day, roughly 5% of them trucks, projected to reach 9,421 by 2036. The structure is 247 ft (75.3 m) long and 63 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRoute 1
CrossesRoyal River
Location1 MI S I95
RouteCounty Highway 1
CountyCumberland County
StateMaine
Coordinates43.80252, -70.18435
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length247 ft (75.3 m)
Longest span81 ft (24.8 m)
Deck width63 ft (19.2 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,729 (2016)
Projected traffic9,421 by 2036
Trucks5%
Lanes on structure4
Traffic directionOne-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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Route 1 over Royal River built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 2000.

What condition is Route 1 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 September 2024.

How much traffic does Route 1 over Royal River carry?

About 6,729 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Route 1 over Royal River?

The structure is 247 ft (75.3 m) long with a longest span of 81 ft (24.8 m) and a deck 63 ft wide.

Who owns Route 1 over Royal River?

It is owned by the State Highway Agency.