Structure 625330356903381 · Tangipahoa County, LA

Richardson RD over Morgan Branch

Carries Richardson RD over Morgan Branch, 1.3 Mi N/e Jct 1063 & 442.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT98 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

98 ft end to end, longest span 20 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 slab bridge.

Built200026 years old
Length98.1 ft29.9 m
Daily traffic117counted 2020
Last inspectedMarch 2023every 24 months

Location

StateLouisiana
CountyTangipahoa
Location1.3 Mi N/e Jct 1063 & 442
CarriesRichardson RD
CrossesMorgan Branch
Coordinates30.59461, -90.56387

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length98.1 ft (29.9 m)
Max Span20.0 ft (6.1 m)
Deck Width30.2 ft (9.2 m)
Deck Area275.1 sq m
Main Spans5
Year Built2000

Traffic

Avg Daily Traffic117 (2020)
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number625330356903381

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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