US Bridges

Loop 1604 over Medina River

Good

Bexar County, Texas · 2.5 MI N of FM 2536 · Structure no. 150150245201033

Built
1970
55 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
710 ft
1 main span
Daily traffic
10,213
2020 count
Owner
State
State Highway Agency

About this bridge

Loop 1604 over Medina River is a prestressed concrete stringer/multi-beam or girder carrying Loop 1604 over Medina River in Bexar County, Texas. It was built in 1970, so it is 55 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 10,213 vehicles a day, roughly 7% of them trucks, projected to reach 12,050 by 2033. The structure is 710 ft (216.4 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLoop 1604
CrossesMedina River
Location2.5 MI N of FM 2536
RouteState Highway 1604
StateTexas
Coordinates29.33532, -98.68996
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating74 US tons
Inventory rating24 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+9 approach)
Design loadHS 20
Structure length710 ft (216.4 m)
Longest span110 ft (33.5 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,213 (2020)
Projected traffic12,050 by 2033
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Loop 1604 over Medina River built?

It was built in 1970, making it 55 years old in 2025.

What condition is Loop 1604 over Medina River 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 2024.

How much traffic does Loop 1604 over Medina River carry?

About 10,213 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Loop 1604 over Medina River?

The structure is 710 ft (216.4 m) long with a longest span of 110 ft (33.5 m) and a deck 42 ft wide.

Who owns Loop 1604 over Medina River?

It is owned by the State Highway Agency.