Structure 100000030034013 · Baltimore County, MD

US 40 Ebr over Little Gunpowder Falls

Carries US 40 Ebr over Little Gunpowder Falls, On Harford Co Line.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT100 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

100 ft end to end, longest span 48 ft. Lengths and the car 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.

Built1935rebuilt 2022
Length99.7 ft30.4 m
Daily traffic14,805counted 2015
Last inspectedApril 2023every 24 months

Location

StateMaryland
CountyBaltimore
LocationOn Harford Co Line
CarriesUS 40 Ebr
CrossesLittle Gunpowder Falls
Coordinates39.42132, -76.37356

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length99.7 ft (30.4 m)
Max Span47.9 ft (14.6 m)
Deck Width48.2 ft (14.7 m)
Deck Area446.9 sq m
Main Spans2
Year Built1935 (reconstructed 2022)

Traffic

Avg Daily Traffic14,805 (2015)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number100000030034013

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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