US Bridges

Nasa RD 1 over Taylor Bayou

Fair

Harris County, Texas · 3.65 MI NE of FM 270 · Structure no. 121020098101024

Built
2000
25 years old
Condition
Fair
inspected November 2024
Type
Slab
Prestressed Concrete
Length
900 ft
18 main spans
Daily traffic
27,758
2023 count
Owner
State
State Highway Agency

About this bridge

Nasa RD 1 over Taylor Bayou is a prestressed concrete slab carrying Nasa RD 1 over Taylor Bayou in Harris County, Texas. It was built in 2000, so it is 25 years old, younger 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 27,758 vehicles a day, roughly 9% of them trucks, projected to reach 38,861 by 2042. The structure is 900 ft (274.3 m) long and 100 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNasa RD 1
CrossesTaylor Bayou
Location3.65 MI NE of FM 270
RouteState Highway 1
CountyHarris County
StateTexas
Coordinates29.5654, -95.05416
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans18
Design loadHS 20
Structure length900 ft (274.3 m)
Longest span49 ft (14.9 m)
Deck width100 ft (30.4 m)
Roadway width91 ft (27.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,758 (2023)
Projected traffic38,861 by 2042
Trucks9%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 Nasa RD 1 over Taylor Bayou built?

It was built in 2000, making it 25 years old in 2025.

What condition is Nasa RD 1 over Taylor Bayou 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 November 2024.

How much traffic does Nasa RD 1 over Taylor Bayou carry?

About 27,758 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Nasa RD 1 over Taylor Bayou?

The structure is 900 ft (274.3 m) long with a longest span of 49 ft (14.9 m) and a deck 100 ft wide.

Who owns Nasa RD 1 over Taylor Bayou?

It is owned by the State Highway Agency.