US Bridges

N Saint Marys ST over San Antonio River

Fair

Bexar County, Texas · 0.05 MI N of E Martin ST · Structure no. 150150B30130006

Built
1915
110 years old, rebuilt 1950
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
6,770
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N Saint Marys ST over San Antonio River is a concrete continuous tee beam carrying N Saint Marys ST over San Antonio River in Bexar County, Texas. It was built in 1915 and reconstructed in 1950, so it is 110 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 6 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 6,770 vehicles a day, projected to reach 9,500 by 2042. The structure is 100 ft (30.5 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesN Saint Marys ST
CrossesSan Antonio River
Location0.05 MI N of E Martin ST
RouteCity Street 8136
CountyBexar County
StateTexas
Coordinates29.43075, -98.49137
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 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 geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length100 ft (30.5 m)
Longest span34 ft (10.4 m)
Deck width58 ft (17.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,770 (2022)
Projected traffic9,500 by 2042
Trucks0%
Lanes on structure2
Traffic directionOne-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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$10,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N Saint Marys ST over San Antonio River built?

It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1950.

What condition is N Saint Marys ST over San Antonio 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 2023.

How much traffic does N Saint Marys ST over San Antonio River carry?

About 6,770 vehicles per day (2022 count).

How long is N Saint Marys ST over San Antonio River?

The structure is 100 ft (30.5 m) long with a longest span of 34 ft (10.4 m) and a deck 58 ft wide.

Who owns N Saint Marys ST over San Antonio River?

It is owned by the City or Municipal Highway Agency.