Structure 121700351007218 · Montgomery County, TX

SH 99 EB over Townsend BLVD

Carries SH 99 EB over Townsend BLVD, 4.35 Mi W Of FM 1314.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT180 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

180 ft end to end: 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.

Built201610 years old
Length180.1 ft54.9 m
Daily traffic4,000counted 2016
Last inspectedNovember 2022every 48 months

Location

StateTexas
CountyMontgomery
Location4.35 Mi W Of FM 1314
CarriesSH 99 EB
CrossesTownsend BLVD
Coordinates30.13014, -95.35846

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length180.1 ft (54.9 m)
Max Span105.0 ft (32 m)
Deck Width40.0 ft (12.2 m)
Deck Area669.8 sq m
Main Spans1
Year Built2016

Traffic

Avg Daily Traffic4,000 (2016)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge7

Inspection & Ownership

Last InspectionNovember 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121700351007218

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