Structure 1630 · Pemiscot County, MO

US 61 N over Is 55

Carries US 61 N over Is 55, S 19 T 17 N R 12 E.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT273 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 4/9 · sets the ratingSubstructure 6/9

273 ft end to end, longest span 95 ft: about 4 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.

Built1971rebuilt 1984
Length273.0 ft83.2 m
Daily traffic1,250counted 2024
Last inspectedFebruary 2024every 24 months

Location

StateMissouri
CountyPemiscot
LocationS 19 T 17 N R 12 E
CarriesUS 61 N
CrossesIs 55
Coordinates36.08993, -89.79568

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length273.0 ft (83.2 m)
Max Span95.1 ft (29 m)
Deck Width46.9 ft (14.3 m)
Deck Area1189.8 sq m
Main Spans2
Year Built1971 (reconstructed 1984)

Traffic

Avg Daily Traffic1,250 (2024)
Truck Traffic4%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number1630

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.

Nearby Bridges