US Bridges

FM 1937 over Medina River

Fair

Bexar County, Texas · 1.75 MI N of Loop 1604 · Structure no. 150150225501001

Built
1957
68 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
1,642
2020 count
Owner
State
State Highway Agency

About this bridge

FM 1937 over Medina River is a concrete continuous slab carrying FM 1937 over Medina River in Bexar County, Texas. It was built in 1957, so it is 68 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 1,642 vehicles a day, roughly 24% of them trucks, projected to reach 3,080 by 2033. The structure is 100 ft (30.5 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 1937
CrossesMedina River
Location1.75 MI N of Loop 1604
RouteState Highway 1937
CountyBexar County
StateTexas
Coordinates29.23883, -98.45283
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length100 ft (30.5 m)
Longest span40 ft (12.2 m)
Deck width29 ft (8.9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,642 (2020)
Projected traffic3,080 by 2033
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$6,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 1937 over Medina River built?

It was built in 1957, making it 68 years old in 2025.

What condition is FM 1937 over Medina River 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 August 2024.

How much traffic does FM 1937 over Medina River carry?

About 1,642 vehicles per day (2020 count), of which roughly 24% are trucks.

How long is FM 1937 over Medina River?

The structure is 100 ft (30.5 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.

Who owns FM 1937 over Medina River?

It is owned by the State Highway Agency.