Structure 121700274401002 · Montgomery County, TX

FM 2854 over San Jacinto River

Carries FM 2854 over San Jacinto River, 2.6 Mi W 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
SEMI-TRUCK · 72 FT305 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

305 ft end to end, longest span 65 ft: about 4 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.

Built196858 years old
Length305.1 ft93 m
Daily traffic14,511counted 2023
Last inspectedSeptember 2024every 12 months

Location

StateTexas
CountyMontgomery
Location2.6 Mi W Of IH 45
CarriesFM 2854
CrossesSan Jacinto River
Coordinates30.31461, -95.51148

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length305.1 ft (93 m)
Max Span65.0 ft (19.8 m)
Deck Width34.8 ft (10.6 m)
Deck Area985.8 sq m
Main Spans5
Year Built1968

Traffic

Avg Daily Traffic14,511 (2023)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical3 — Scour critical
Structure Number121700274401002

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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