Structure 150460172802005 · Comal County, TX

FM 306 over Guadalupe River

Carries FM 306 over Guadalupe River, 12.4 Mi W Of IH 35.

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
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT210 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

210 ft end to end, longest span 30 ft: 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 slab bridge.

Built1962rebuilt 1980
Length210.0 ft64 m
Daily traffic8,716counted 2020
Last inspectedJune 2024every 12 months

Location

StateTexas
CountyComal
Location12.4 Mi W Of IH 35
CarriesFM 306
CrossesGuadalupe River
Coordinates29.86453, -98.16381

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length210.0 ft (64 m)
Max Span29.9 ft (9.1 m)
Deck Width40.0 ft (12.2 m)
Deck Area780.8 sq m
Main Spans8
Year Built1962 (reconstructed 1980)

Traffic

Avg Daily Traffic8,716 (2020)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical3 — Scour critical
Structure Number150460172802005

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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