US Bridges

Calaveras ST over Alazan Creek

Fair

Bexar County, Texas · 0.05 MI S of Arbor ST · Structure no. 150150B05155001

Built
1984
41 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
152 ft
3 main spans
Daily traffic
581
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Calaveras ST over Alazan Creek is a prestressed concrete box beam or girders - multiple carrying Calaveras ST over Alazan Creek in Bexar County, Texas. It was built in 1984, so it is 41 years old, younger 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 581 vehicles a day, projected to reach 3,000 by 2031. The structure is 152 ft (46.3 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCalaveras ST
CrossesAlazan Creek
Location0.05 MI S of Arbor ST
RouteCity Street 0
CountyBexar County
StateTexas
Coordinates29.43663, -98.52363
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 inspectionMay 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span50 ft (15.2 m)
Deck width42 ft (12.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic581 (2020)
Projected traffic3,000 by 2031
Trucks0%
Lanes on structure2
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$84,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Calaveras ST over Alazan Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Calaveras 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 May 2023.

How much traffic does Calaveras ST over Alazan Creek carry?

About 581 vehicles per day (2020 count).

How long is Calaveras ST over Alazan Creek?

The structure is 152 ft (46.3 m) long with a longest span of 50 ft (15.2 m) and a deck 42 ft wide.

Who owns Calaveras ST over Alazan Creek?

It is owned by the City or Municipal Highway Agency.