US Bridges

San Augustine Ave over Boggy Bayou

FairPosted for load

Harris County, Texas · .5 Mi. E. of E. Beltway 8 · Structure no. 121020C02781001

Built
1970
55 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
91 ft
3 main spans
Daily traffic
9,410
2009 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

San Augustine Ave over Boggy Bayou is a concrete stringer/multi-beam or girder carrying San Augustine Ave over Boggy Bayou in Harris County, Texas. It was built in 1970, so it is 55 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 9,410 vehicles a day, projected to reach 10,000 by 2026. The structure is 91 ft (27.7 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSan Augustine Ave
CrossesBoggy Bayou
Location.5 Mi. E. of E. Beltway 8
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.69059, -95.14487
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length91 ft (27.7 m)
Longest span30 ft (9.1 m)
Deck width58 ft (17.7 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,410 (2009)
Projected traffic10,000 by 2026
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$11,000
NavigationNo navigation control on waterway

Frequently asked questions

When was San Augustine Ave over Boggy Bayou built?

It was built in 1970, making it 55 years old in 2025.

What condition is San Augustine Ave over Boggy Bayou in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does San Augustine Ave over Boggy Bayou carry?

About 9,410 vehicles per day (2009 count).

How long is San Augustine Ave over Boggy Bayou?

The structure is 91 ft (27.7 m) long with a longest span of 30 ft (9.1 m) and a deck 58 ft wide.

Who owns San Augustine Ave over Boggy Bayou?

It is owned by the Town or Township Highway Agency.