Structure 191030084302241 · Harrison County, TX

FM 450 over Little Cypress Bayou

Carries FM 450 over Little Cypress Bayou, 1.65 Mi N Of FM 449.

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 FT2,400 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

2,400 ft end to end, longest span 100 ft: about 6.7 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.

Built201511 years old
Length2399.9 ft731.5 m
Daily traffic881counted 2020
Last inspectedSeptember 2023every 24 months

Location

StateTexas
CountyHarrison
Location1.65 Mi N Of FM 449
CarriesFM 450
CrossesLittle Cypress Bayou
Coordinates32.62557, -94.57898

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length2399.9 ft (731.5 m)
Max Span100.1 ft (30.5 m)
Deck Width45.9 ft (14 m)
Deck Area10,241 sq m
Main Spans24
Year Built2015

Traffic

Avg Daily Traffic881 (2020)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number191030084302241

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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