US Bridges

Groff Ave over Zarzamora Crk

Good

Bexar County, Texas · 0.2 MI W of 36th ST · Structure no. 150150B14905001

Built
1975
50 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
181 ft
3 main spans
Daily traffic
642
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Groff Ave over Zarzamora Crk is a prestressed concrete box beam or girders - multiple carrying Groff Ave over Zarzamora Crk in Bexar County, Texas. It was built in 1975, so it is 50 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 642 vehicles a day, projected to reach 944 by 2031. The structure is 181 ft (55.2 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesGroff Ave
CrossesZarzamora Crk
Location0.2 MI W of 36th ST
RouteCity Street 0
CountyBexar County
StateTexas
Coordinates29.44001, -98.57397
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length181 ft (55.2 m)
Longest span61 ft (18.6 m)
Deck width42 ft (12.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic642 (2020)
Projected traffic944 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Groff Ave over Zarzamora Crk built?

It was built in 1975, making it 50 years old in 2025.

What condition is Groff Ave over Zarzamora Crk in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Groff Ave over Zarzamora Crk carry?

About 642 vehicles per day (2020 count).

How long is Groff Ave over Zarzamora Crk?

The structure is 181 ft (55.2 m) long with a longest span of 61 ft (18.6 m) and a deck 42 ft wide.

Who owns Groff Ave over Zarzamora Crk?

It is owned by the City or Municipal Highway Agency.