Structure 150460001605217 · Comal County, TX

IH 35 Sbml over Four Mile Creek

Carries IH 35 Sbml over Four Mile Creek, 4.4 Mi SW Of FM 725.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT151 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

151 ft end to end, longest span 21 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 slab bridge.

Built200125 years old
Length150.9 ft46 m
Daily traffic54,997counted 2019
Last inspectedJune 2024every 24 months

Location

StateTexas
CountyComal
Location4.4 Mi SW Of FM 725
CarriesIH 35 Sbml
CrossesFour Mile Creek
Coordinates29.66272, -98.17108

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length150.9 ft (46 m)
Max Span21.0 ft (6.4 m)
Deck Width60.0 ft (18.3 m)
Deck Area841.8 sq m
Main Spans7
Year Built2001

Traffic

Avg Daily Traffic54,997 (2019)
Truck Traffic17%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number150460001605217

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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