Structure 91610004901141 · McLennan County, TX

Spur 484 SB over US 77 Bus NB

Carries Spur 484 SB over US 77 Bus NB, 1.5 Mi SE Of IH 35.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT282 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

282 ft end to end, longest span 112 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.

Built195868 years old
Length282.2 ft86 m
Daily traffic6,917counted 2020
Last inspectedJanuary 2023every 24 months

Location

StateTexas
CountyMcLennan
Location1.5 Mi SE Of IH 35
CarriesSpur 484 SB
CrossesUS 77 Bus NB
Coordinates31.56084, -97.10169

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length282.2 ft (86 m)
Max Span111.9 ft (34.1 m)
Deck Width40.4 ft (12.3 m)
Deck Area1057.8 sq m
Main Spans3
Year Built1958

Traffic

Avg Daily Traffic6,917 (2020)
Truck Traffic4%
Lanes On Bridge3
Lanes Under Bridge1

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour CriticalNot applicable
Structure Number091610004901141

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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