Structure 81150000506127 · Howard County, TX

IH 20 EB over Union Pacific Rr

Carries IH 20 EB over Union Pacific Rr, 2.1 Mi E Of US 87.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT517 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

517 ft end to end, longest span 55 ft: about 7 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.

Built1964rebuilt 1991
Length517.1 ft157.6 m
Daily traffic12,172counted 2019
Last inspectedJune 2023every 24 months

Location

StateTexas
CountyHoward
Location2.1 Mi E Of US 87
CarriesIH 20 EB
CrossesUnion Pacific Rr
Coordinates32.26208, -101.45430

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length517.1 ft (157.6 m)
Max Span55.1 ft (16.8 m)
Deck Width40.0 ft (12.2 m)
Deck Area1922.7 sq m
Main Spans10
Year Built1964 (reconstructed 1991)

Traffic

Avg Daily Traffic12,172 (2019)
Truck Traffic43%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number081150000506127

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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