US Bridges

Gen Mcmullen DR NB over Zarzamora Creek

Fair

Bexar County, Texas · 0.20 MI N of W Commerce · Structure no. 150150B13385002

Built
1968
57 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
182 ft
3 main spans
Daily traffic
13,076
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Gen Mcmullen DR NB over Zarzamora Creek is a prestressed concrete stringer/multi-beam or girder carrying Gen Mcmullen DR NB over Zarzamora Creek in Bexar County, Texas. It was built in 1968, so it is 57 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 5 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 13,076 vehicles a day, roughly 1% of them trucks, projected to reach 17,500 by 2031. The structure is 182 ft (55.5 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesGen Mcmullen DR NB
CrossesZarzamora Creek
Location0.20 MI N of W Commerce
RouteCity Street 8019
CountyBexar County
StateTexas
Coordinates29.43389, -98.55369
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to 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
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length182 ft (55.5 m)
Longest span60 ft (18.3 m)
Deck width43 ft (13 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,076 (2020)
Projected traffic17,500 by 2031
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$16,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Gen Mcmullen DR NB over Zarzamora Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is Gen Mcmullen DR NB over Zarzamora 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 Gen Mcmullen DR NB over Zarzamora Creek carry?

About 13,076 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Gen Mcmullen DR NB over Zarzamora Creek?

The structure is 182 ft (55.5 m) long with a longest span of 60 ft (18.3 m) and a deck 43 ft wide.

Who owns Gen Mcmullen DR NB over Zarzamora Creek?

It is owned by the City or Municipal Highway Agency.