Structure 625204530105241 · St. Tammany County, LA

I0059 over West Pearl River

Carries I0059 over West Pearl River, 5.2 Mi No I-10 & I-59 Int.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,645 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

2,645 ft end to end, longest span 175 ft: about 7.3 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 girder bridge.

Built199729 years old
Length2645.0 ft806.2 m
Daily traffic36,841counted 2021
Last inspectedJuly 2023every 24 months

Location

StateLouisiana
CountySt. Tammany
Location5.2 Mi No I-10 & I-59 Int
CarriesI0059
CrossesWest Pearl River
Coordinates30.38003, -89.73830

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length2645.0 ft (806.2 m)
Max Span174.9 ft (53.3 m)
Deck Width42.7 ft (13 m)
Deck Area10480.6 sq m
Main Spans3
Year Built1997

Traffic

Avg Daily Traffic36,841 (2021)
Truck Traffic25%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical7 — Countermeasures installed
Structure Number625204530105241

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.

Nearby Bridges