Structure 121020072003405 · Harris County, TX

SH 249 NB Ml Toll over Baker DR & Brown RD

Carries SH 249 NB Ml Toll over Baker DR & Brown RD, 3.8 Mi N Of SH 99.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,234 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

1,234 ft end to end, longest span 128 ft: about 3.4 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.

Built20206 years old
Length1233.9 ft376.1 m
Daily traffic17,105counted 2021
Last inspectedDecember 2022every 48 months

Location

StateTexas
CountyHarris
Location3.8 Mi N Of SH 99
CarriesSH 249 NB Ml Toll
CrossesBaker DR & Brown RD
Coordinates30.10595, -95.63975

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1233.9 ft (376.1 m)
Max Span128.0 ft (39 m)
Deck Width70.5 ft (21.5 m)
Deck Area8086.1 sq m
Main Spans10
Year Built2020

Traffic

Avg Daily Traffic17,105 (2021)
Truck Traffic7%
Lanes On Bridge3
Lanes Under Bridge11

Inspection & Ownership

Last InspectionDecember 2022
Inspection FrequencyEvery 48 months
OwnerLocal Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020072003405

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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