Structure 121700011004186 · Montgomery County, TX

IH 45 Ml over W Fk San Jac Ri S Rel

Carries IH 45 Ml over W Fk San Jac Ri S Rel, 0.15 Mi N Of FM 1488.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT242 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

242 ft end to end, longest span 61 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 multi-beam bridge.

Built200719 years old
Length242.1 ft73.8 m
Daily traffic180,786counted 2023
Last inspectedSeptember 2024every 24 months

Location

StateTexas
CountyMontgomery
Location0.15 Mi N Of FM 1488
CarriesIH 45 Ml
CrossesW Fk San Jac Ri S Rel
Coordinates30.23910, -95.45851

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length242.1 ft (73.8 m)
Max Span61.0 ft (18.6 m)
Deck Width167.7 ft (51.1 m)
Deck Area3771.2 sq m
Main Spans4
Year Built2007

Traffic

Avg Daily Traffic180,786 (2023)
Truck Traffic10%
Lanes On Bridge10

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number121700011004186

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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