Structure 100000160007012 · Prince George's County, MD

US 1 Alt SB over Northeast Branch

Carries US 1 Alt SB over Northeast Branch, 0.45 Mile North Of Md 450.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT305 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

305 ft end to end, longest span 115 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.

Built1955rebuilt 1998
Length305.1 ft93 m
Daily traffic13,462counted 2009
Last inspectedSeptember 2023every 24 months

Location

StateMaryland
CountyPrince George's
Location0.45 Mile North Of Md 450
CarriesUS 1 Alt SB
CrossesNortheast Branch
Coordinates38.94537, -76.94137

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length305.1 ft (93 m)
Max Span115.2 ft (35.1 m)
Deck Width39.0 ft (11.9 m)
Deck Area1106.7 sq m
Main Spans3
Year Built1955 (reconstructed 1998)

Traffic

Avg Daily Traffic13,462 (2009)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number100000160007012

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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