US Bridges

Oak Knoll DR over Trib of Zarzamora CR

Good

Bexar County, Texas · 0.75 MI W of Sherrill RD · Structure no. 150150B25210001

Built
2001
24 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
2 main spans
Daily traffic
500
2013 count
Owner
City
City or Municipal Highway Agency

About this bridge

Oak Knoll DR over Trib of Zarzamora CR is a prestressed concrete stringer/multi-beam or girder carrying Oak Knoll DR over Trib of Zarzamora CR in Bexar County, Texas. It was built in 2001, so it is 24 years old, younger 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 500 vehicles a day, projected to reach 1,000 by 2033. The structure is 120 ft (36.6 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesOak Knoll DR
CrossesTrib of Zarzamora CR
Location0.75 MI W of Sherrill RD
RouteCity Street 0
CountyBexar County
StateTexas
Coordinates29.4731, -98.59211
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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable 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 typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span60 ft (18.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2013)
Projected traffic1,000 by 2033
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Oak Knoll DR over Trib of Zarzamora CR built?

It was built in 2001, making it 24 years old in 2025.

What condition is Oak Knoll DR over Trib of Zarzamora CR 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 August 2023.

How much traffic does Oak Knoll DR over Trib of Zarzamora CR carry?

About 500 vehicles per day (2013 count).

How long is Oak Knoll DR over Trib of Zarzamora CR?

The structure is 120 ft (36.6 m) long with a longest span of 60 ft (18.3 m) and a deck 43 ft wide.

Who owns Oak Knoll DR over Trib of Zarzamora CR?

It is owned by the City or Municipal Highway Agency.