Structure 200000BC3206010 · Baltimore County, MD

29th Street over I 83 Jones Falls Csx

Carries 29th Street over I 83 Jones Falls Csx, 0.8 Mi N North AVE.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT766 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

766 ft end to end, longest span 232 ft: about 2.1 football fields. 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 deck arch.

Built1938rebuilt 1987
Length766.1 ft233.5 m
Daily traffic5,688counted 2016
Last inspectedOctober 2024every 24 months

Location

StateMaryland
CountyBaltimore
Location0.8 Mi N North AVE
Carries29th Street
CrossesI 83 Jones Falls Csx
Coordinates39.31838, -76.62955

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length766.1 ft (233.5 m)
Max Span232.0 ft (70.7 m)
Deck Width61.0 ft (18.6 m)
Deck Area4343.1 sq m
Main Spans2
Year Built1938 (reconstructed 1987)

Traffic

Avg Daily Traffic5,688 (2016)
Truck Traffic5%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical9 — Foundation above flood level
Structure Number200000BC3206010

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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