Structure 121700011004307 · Montgomery County, TX

IH 45 Nb/sh 242 WB over IH 45 Ml & Sh242

Carries IH 45 Nb/sh 242 WB over IH 45 Ml & Sh242, Jct IH 45 And SH 242.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,088 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

2,088 ft end to end, longest span 311 ft: about 5.8 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.

Built201412 years old
Length2087.9 ft636.4 m
Daily traffic8,430counted 2023
Last inspectedNovember 2024every 24 months

Location

StateTexas
CountyMontgomery
LocationJct IH 45 And SH 242
CarriesIH 45 Nb/sh 242 WB
CrossesIH 45 Ml & Sh242
Coordinates30.20755, -95.45862

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length2087.9 ft (636.4 m)
Max Span311.0 ft (94.8 m)
Deck Width28.5 ft (8.7 m)
Deck Area5536.7 sq m
Main Spans6
Year Built2014

Traffic

Avg Daily Traffic8,430 (2023)
Truck Traffic10%
Lanes On Bridge1
Lanes Under Bridge25

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121700011004307

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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