US Bridges

Townsen Blvd over San Jacinto Relief

Good

Harris County, Texas · 0.25 MI W of US 59 · Structure no. 121020017706149

Built
1983
42 years old, rebuilt 2010
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
11,666
2022 count
Owner
State
State Highway Agency

About this bridge

Townsen Blvd over San Jacinto Relief is a concrete culvert carrying Townsen Blvd over San Jacinto Relief in Harris County, Texas. It was built in 1983 and reconstructed in 2010, so it is 42 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 11,666 vehicles a day, roughly 3% of them trucks, projected to reach 17,389 by 2041. The structure is 31 ft (9.4 m) long and 110 ft wide.

CarriesTownsen Blvd
CrossesSan Jacinto Relief
Location0.25 MI W of US 59
RouteU.S. Route 59
StateTexas
Coordinates30.01914, -95.26564
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span10 ft (3 m)
Deck width110 ft (33.5 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,666 (2022)
Projected traffic17,389 by 2041
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Townsen Blvd over San Jacinto Relief built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 2010.

What condition is Townsen Blvd over San Jacinto 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 November 2024.

How much traffic does Townsen Blvd over San Jacinto Relief carry?

About 11,666 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Townsen Blvd over San Jacinto Relief?

The structure is 31 ft (9.4 m) long with a longest span of 10 ft (3 m) and a deck 110 ft wide.

Who owns Townsen Blvd over San Jacinto Relief?

It is owned by the State Highway Agency.