Structure 140280053503124 · Caldwell County, TX

IH 10 EB over San Marcos River

Carries IH 10 EB over San Marcos River, 2.6 Mi W Of US 183.

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
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,760 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

1,760 ft end to end, longest span 110 ft: about 4.9 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.

Built196957 years old
Length1759.8 ft536.4 m
Daily traffic18,426counted 2019
Last inspectedDecember 2024every 24 months

Location

StateTexas
CountyCaldwell
Location2.6 Mi W Of US 183
CarriesIH 10 EB
CrossesSan Marcos River
Coordinates29.64908, -97.63237

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1759.8 ft (536.4 m)
Max Span109.9 ft (33.5 m)
Deck Width42.3 ft (12.9 m)
Deck Area6919.6 sq m
Main Spans3
Year Built1969

Traffic

Avg Daily Traffic18,426 (2019)
Truck Traffic38%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical7 — Countermeasures installed
Structure Number140280053503124

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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