Structure 100000150179010 · Montgomery County, MD

Md 118 over Csx Transportation

Carries Md 118 over Csx Transportation, 0.98 Mile N Of Md 117.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT142 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

142 ft end to end. 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.

Built199828 years old
Length142.1 ft43.3 m
Daily traffic25,451counted 2009
Last inspectedMarch 2023every 24 months

Location

StateMaryland
CountyMontgomery
Location0.98 Mile N Of Md 117
CarriesMd 118
CrossesCsx Transportation
Coordinates39.17431, -77.27332

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length142.1 ft (43.3 m)
Max Span136.2 ft (41.5 m)
Deck Width113.8 ft (34.7 m)
Deck Area1502.5 sq m
Main Spans1
Year Built1998

Traffic

Avg Daily Traffic25,451 (2009)
Truck Traffic5%
Lanes On Bridge6

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number100000150179010

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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