US Bridges

Lp 1604 Nbml over Culebra Creek & FM 471

Fair

Bexar County, Texas · 0.8 MI N of SH 151 · Structure no. 150150245201173

Built
2004
21 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
883 ft
7 main spans
Daily traffic
33,233
2018 count
Owner
State
State Highway Agency

About this bridge

Lp 1604 Nbml over Culebra Creek & FM 471 is a prestressed concrete stringer/multi-beam or girder carrying Lp 1604 Nbml over Culebra Creek & FM 471 in Bexar County, Texas. It was built in 2004, so it is 21 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 33,233 vehicles a day, roughly 6% of them trucks, projected to reach 28,170 by 2033. The structure is 883 ft (269.1 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLp 1604 Nbml
CrossesCulebra Creek & FM 471
Location0.8 MI N of SH 151
RouteState Highway 1604
CountyBexar County
StateTexas
Coordinates29.49362, -98.70482
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7 (+1 approach)
Design loadHS 20
Structure length883 ft (269.1 m)
Longest span121 ft (36.9 m)
Deck width39 ft (12 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,233 (2018)
Projected traffic28,170 by 2033
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 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 Lp 1604 Nbml over Culebra Creek & FM 471 built?

It was built in 2004, making it 21 years old in 2025.

What condition is Lp 1604 Nbml over Culebra Creek & FM 471 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 2024.

How much traffic does Lp 1604 Nbml over Culebra Creek & FM 471 carry?

About 33,233 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Lp 1604 Nbml over Culebra Creek & FM 471?

The structure is 883 ft (269.1 m) long with a longest span of 121 ft (36.9 m) and a deck 39 ft wide.

Who owns Lp 1604 Nbml over Culebra Creek & FM 471?

It is owned by the State Highway Agency.