Structure 191030049510123 · Harrison County, TX

IH 20 WB over FM 31

Carries IH 20 WB over FM 31, 3.60 Mi E Of US 59.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT167 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

167 ft end to end, longest span 65 ft: about 2 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 multi-beam bridge.

Built196561 years old
Length167.0 ft50.9 m
Daily traffic16,574counted 2019
Last inspectedSeptember 2023every 24 months

Location

StateTexas
CountyHarrison
Location3.60 Mi E Of US 59
CarriesIH 20 WB
CrossesFM 31
Coordinates32.49377, -94.29678

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length167.0 ft (50.9 m)
Max Span65.0 ft (19.8 m)
Deck Width41.3 ft (12.6 m)
Deck Area641.3 sq m
Main Spans3
Year Built1965

Traffic

Avg Daily Traffic16,574 (2019)
Truck Traffic38%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number191030049510123

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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