Structure 3800 · Cumberland County, ME

Route 1 over Royal River

Carries Route 1 over Royal River, 1 Mi S I95.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT247 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9Substructure 6/9 · sets the rating

247 ft end to end, longest span 81 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built1948rebuilt 2000
Length247.0 ft75.3 m
Daily traffic6,729counted 2016
Last inspectedSeptember 2024every 24 months

Location

StateMaine
CountyCumberland
Location1 Mi S I95
CarriesRoute 1
CrossesRoyal River
Coordinates43.80252, -70.18435

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length247.0 ft (75.3 m)
Max Span81.4 ft (24.8 m)
Deck Width63.0 ft (19.2 m)
Deck Area1445.8 sq m
Main Spans3
Year Built1948 (reconstructed 2000)

Traffic

Avg Daily Traffic6,729 (2016)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number3800

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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