Structure 201810030601021 · Orange County, TX

SH 73/sh 87 SB over Cow Bayou

Carries SH 73/sh 87 SB over Cow Bayou, 0.40 Mi S Of SH 62.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,525 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

2,525 ft end to end: about 7.0 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 multi-beam bridge.

Built197254 years old
Length2524.9 ft769.6 m
Daily traffic12,434counted 2020
Last inspectedMarch 2024every 24 months

Location

StateTexas
CountyOrange
Location0.40 Mi S Of SH 62
CarriesSH 73/sh 87 SB
CrossesCow Bayou
Coordinates30.04483, -93.82140

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length2524.9 ft (769.6 m)
Max Span125.0 ft (38.1 m)
Deck Width44.3 ft (13.5 m)
Deck Area10389.6 sq m
Main Spans1
Year Built1972

Traffic

Avg Daily Traffic12,434 (2020)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical5 — Stable for scour
Structure Number201810030601021

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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