US Bridges

Ss 471 over Drain

Fair

Bexar County, Texas · 0.50 MI SW of SH 16 · Structure no. 150150084901015

Built
1986
39 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
37 ft
3 main spans
Daily traffic
28,177
2022 count
Owner
State
State Highway Agency

About this bridge

Ss 471 over Drain is a concrete culvert carrying Ss 471 over Drain in Bexar County, Texas. It was built in 1986, so it is 39 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 28,177 vehicles a day, roughly 4% of them trucks, projected to reach 39,441 by 2042. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesSs 471
CrossesDrain
Location0.50 MI SW of SH 16
RouteState Highway 471
CountyBexar County
StateTexas
Coordinates29.48906, -98.62307
Functional classUrban Other Principal 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,177 (2022)
Projected traffic39,441 by 2042
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ss 471 over Drain built?

It was built in 1986, making it 39 years old in 2025.

What condition is Ss 471 over Drain 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 June 2024.

How much traffic does Ss 471 over Drain carry?

About 28,177 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Ss 471 over Drain?

The structure is 37 ft (11.3 m) long with a longest span of 10 ft (3 m).

Who owns Ss 471 over Drain?

It is owned by the State Highway Agency.