US Bridges

Third Street (ent) over Hl & P Canal

Fair

Harris County, Texas · Johnson Space Center · Structure no. 100001031322737

Built
1963
62 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
120 ft
4 main spans
Daily traffic
500
2019 count
Owner
Federal
NASA

About this bridge

Third Street (ent) over Hl & P Canal is a concrete slab carrying Third Street (ent) over Hl & P Canal in Harris County, Texas. It was built in 1963, so it is 62 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 500 vehicles a day, roughly 1% of them trucks, projected to reach 550 by 2039. The structure is 120 ft (36.6 m) long and 35 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesThird Street (ent)
CrossesHl & P Canal
LocationJohnson Space Center
CountyHarris County
StateTexas
Coordinates29.55181, -95.08973
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.8 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2019)
Projected traffic550 by 2039
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNASA
Maintained byNASA
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Third Street (ent) over Hl & P Canal built?

It was built in 1963, making it 62 years old in 2025.

What condition is Third Street (ent) over Hl & P Canal 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 May 2024.

How much traffic does Third Street (ent) over Hl & P Canal carry?

About 500 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Third Street (ent) over Hl & P Canal?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns Third Street (ent) over Hl & P Canal?

It is owned by the NASA.