US Bridges

US 59 Sbml over San Jacinto River

Fair

Harris County, Texas · 1.7 MI N of FM 1960 · Structure no. 121020017706081

Built
1961
64 years old, rebuilt 1991
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,645 ft
4 main spans
Daily traffic
71,352
2023 count
Owner
State
State Highway Agency

About this bridge

US 59 Sbml over San Jacinto River is a steel continuous stringer/multi-beam or girder carrying US 59 Sbml over San Jacinto River in Harris County, Texas. It was built in 1961 and reconstructed in 1991, so it is 64 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 71,352 vehicles a day, roughly 8% of them trucks, projected to reach 99,855 by 2042. The structure is 1,645 ft (501.4 m) long and 83 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 59 Sbml
CrossesSan Jacinto River
Location1.7 MI N of FM 1960
RouteU.S. Route 59
StateTexas
Coordinates30.02711, -95.25882
Functional classUrban Principal Arterial - Interstate

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+22 approach)
Design loadHS 20
Structure length1,645 ft (501.4 m)
Longest span87 ft (26.6 m)
Deck width83 ft (25.2 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic71,352 (2023)
Projected traffic99,855 by 2042
Trucks8%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 US 59 Sbml over San Jacinto River built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1991.

What condition is US 59 Sbml over San Jacinto 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 December 2024.

How much traffic does US 59 Sbml over San Jacinto River carry?

About 71,352 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is US 59 Sbml over San Jacinto River?

The structure is 1,645 ft (501.4 m) long with a longest span of 87 ft (26.6 m) and a deck 83 ft wide.

Who owns US 59 Sbml over San Jacinto River?

It is owned by the State Highway Agency.