Structure 161780007406225 · Nueces County, TX

IH 37 Sbfr over US 181/drainage Channel

Carries IH 37 Sbfr over US 181/drainage Channel, IH 37 Sbfr Over US 181.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT480 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

480 ft end to end, longest span 141 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.

Built20242 years old
Length479.7 ft146.2 m
Daily traffic2,179counted 2023
Last inspectedSeptember 2024every 24 months

Location

StateTexas
CountyNueces
LocationIH 37 Sbfr Over US 181
CarriesIH 37 Sbfr
CrossesUS 181/drainage Channel
Coordinates27.79771, -97.40926

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length479.7 ft (146.2 m)
Max Span141.1 ft (43 m)
Deck Width35.8 ft (10.9 m)
Deck Area1593.6 sq m
Main Spans3
Year Built2024

Traffic

Avg Daily Traffic2,179 (2023)
Truck Traffic4%
Lanes On Bridge2
Lanes Under Bridge9

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical6 — Scour calculated, stable
Structure Number161780007406225

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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