Structure 151630001705229 · Medina County, TX

IH 35 SB Ml over SH 173

Carries IH 35 SB Ml over SH 173, 4.63 Mi NE Of Frio C/l.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT186 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

186 ft end to end: about 3 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.

Built196858 years old
Length186.0 ft56.7 m
Daily traffic33,084counted 2023
Last inspectedAugust 2024every 24 months

Location

StateTexas
CountyMedina
Location4.63 Mi NE Of Frio C/l
CarriesIH 35 SB Ml
CrossesSH 173
Coordinates29.13055, -98.89537

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length186.0 ft (56.7 m)
Max Span85.0 ft (25.9 m)
Deck Width42.3 ft (12.9 m)
Deck Area731.4 sq m
Main Spans1
Year Built1968

Traffic

Avg Daily Traffic33,084 (2023)
Truck Traffic51%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number151630001705229

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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