US Bridges

S Colorado ST over Alazan Creek

Fair

Bexar County, Texas · 0.1 MI S of Buena Vista · Structure no. 150150B07430002

Built
1965
60 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
185 ft
3 main spans
Daily traffic
5,291
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

S Colorado ST over Alazan Creek is a steel continuous stringer/multi-beam or girder carrying S Colorado ST over Alazan Creek in Bexar County, Texas. It was built in 1965, so it is 60 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.

It carries about 5,291 vehicles a day, projected to reach 9,000 by 2031. The structure is 185 ft (56.4 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesS Colorado ST
CrossesAlazan Creek
Location0.1 MI S of Buena Vista
RouteCity Street 8119
CountyBexar County
StateTexas
Coordinates29.42448, -98.51156
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length185 ft (56.4 m)
Longest span69 ft (21 m)
Deck width54 ft (16.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,291 (2020)
Projected traffic9,000 by 2031
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$20,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S Colorado ST over Alazan Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is S Colorado ST over Alazan Creek 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 S Colorado ST over Alazan Creek carry?

About 5,291 vehicles per day (2020 count).

How long is S Colorado ST over Alazan Creek?

The structure is 185 ft (56.4 m) long with a longest span of 69 ft (21 m) and a deck 54 ft wide.

Who owns S Colorado ST over Alazan Creek?

It is owned by the City or Municipal Highway Agency.