Structure 201240050804046 · Jefferson County, TX

SH 73 WB over N Fork Mayhaw Bayou

Carries SH 73 WB over N Fork Mayhaw Bayou, 3.5 Mi E Of SH 124.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT263 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

263 ft end to end, longest span 26 ft: about 4 semi-trucks nose to tail. 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 slab bridge.

Built1954rebuilt 1988
Length263.1 ft80.2 m
Daily traffic7,603counted 2022
Last inspectedJune 2024every 24 months

Location

StateTexas
CountyJefferson
Location3.5 Mi E Of SH 124
CarriesSH 73 WB
CrossesN Fork Mayhaw Bayou
Coordinates29.82579, -94.29532

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length263.1 ft (80.2 m)
Max Span25.9 ft (7.9 m)
Deck Width45.9 ft (14 m)
Deck Area1122.8 sq m
Main Spans10
Year Built1954 (reconstructed 1988)

Traffic

Avg Daily Traffic7,603 (2022)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number201240050804046

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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