US Bridges

Market Street over San Jacinto River Relief

Good

Harris County, Texas · 0.35 MI E of Magnolia · Structure no. 121020AA4850004

Built
1990
35 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
300 ft
6 main spans
Daily traffic
1,709
2016 count
Owner
County
County Highway Agency

About this bridge

Market Street over San Jacinto River Relief is a prestressed concrete box beam or girders - multiple carrying Market Street over San Jacinto River Relief in Harris County, Texas. It was built in 1990, so it is 35 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 1,709 vehicles a day, projected to reach 1,000 by 2035. The structure is 300 ft (91.4 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMarket Street
CrossesSan Jacinto River Relief
Location0.35 MI E of Magnolia
RouteCounty Highway 0
StateTexas
Coordinates29.79027, -95.08397
Functional classRural Local

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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length300 ft (91.4 m)
Longest span50 ft (15.2 m)
Deck width34 ft (10.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,709 (2016)
Projected traffic1,000 by 2035
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Market Street over San Jacinto River Relief built?

It was built in 1990, making it 35 years old in 2025.

What condition is Market Street over San Jacinto River Relief 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 October 2023.

How much traffic does Market Street over San Jacinto River Relief carry?

About 1,709 vehicles per day (2016 count).

How long is Market Street over San Jacinto River Relief?

The structure is 300 ft (91.4 m) long with a longest span of 50 ft (15.2 m) and a deck 34 ft wide.

Who owns Market Street over San Jacinto River Relief?

It is owned by the County Highway Agency.