Structure 121700353801010 · Montgomery County, TX

SH 242 EB over W Fk San Jacinto Ri

Carries SH 242 EB over W Fk San Jacinto Ri, 3.60 Mi E Of IH 45.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
4,756 FT OVERALL1,000 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

4,756 ft end to end, longest span 120 ft: about 13 football fields. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built199432 years old
Length4755.9 ft1449.6 m
Daily traffic47,121counted 2023
Last inspectedDecember 2024every 24 months

Location

StateTexas
CountyMontgomery
Location3.60 Mi E Of IH 45
CarriesSH 242 EB
CrossesW Fk San Jacinto Ri
Coordinates30.21051, -95.39778

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length4755.9 ft (1449.6 m)
Max Span120.1 ft (36.6 m)
Deck Width44.9 ft (13.7 m)
Deck Area19859.5 sq m
Main Spans44
Year Built1994

Traffic

Avg Daily Traffic47,121 (2023)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical6 — Scour calculated, stable
Structure Number121700353801010

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.

Nearby Bridges