Structure 121020027116374 · Harris County, TX

IH 610 SB To EB over N Braeswood/brays Bayou

Carries IH 610 SB To EB over N Braeswood/brays Bayou, 1.9 Mi W Of US 90a.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT599 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

599 ft end to end, longest span 87 ft: about 1.7 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.

Built197155 years old
Length599.1 ft182.6 m
Daily traffic70,340counted 2013
Last inspectedNovember 2024every 24 months

Location

StateTexas
CountyHarris
Location1.9 Mi W Of US 90a
CarriesIH 610 SB To EB
CrossesN Braeswood/brays Bayou
Coordinates29.68150, -95.45864

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length599.1 ft (182.6 m)
Max Span86.9 ft (26.5 m)
Deck Width51.2 ft (15.6 m)
Deck Area2848.6 sq m
Main Spans7
Year Built1971

Traffic

Avg Daily Traffic70,340 (2013)
Truck Traffic6%
Lanes On Bridge3
Lanes Under Bridge10

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical5 — Stable for scour
Structure Number121020027116374

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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