US Bridges

Nasa RD 1 over Mud Lake

Fair

Harris County, Texas · 3.56 MI NE of SH 3 · Structure no. 121020098101019

Built
1984
41 years old, rebuilt 1997
Condition
Fair
inspected November 2024
Type
Slab
Prestressed Concrete
Length
825 ft
20 main spans
Daily traffic
37,468
2023 count
Owner
State
State Highway Agency

About this bridge

Nasa RD 1 over Mud Lake is a prestressed concrete slab carrying Nasa RD 1 over Mud Lake in Harris County, Texas. It was built in 1984 and reconstructed in 1997, so it is 41 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 37,468 vehicles a day, roughly 8% of them trucks, projected to reach 52,455 by 2042. The structure is 825 ft (251.5 m) long and 87 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNasa RD 1
CrossesMud Lake
Location3.56 MI NE of SH 3
RouteState Highway 1
StateTexas
Coordinates29.56313, -95.07174
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
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 spans20 (+16 approach)
Design loadHS 20
Structure length825 ft (251.5 m)
Longest span32 ft (9.8 m)
Deck width87 ft (26.5 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,468 (2023)
Projected traffic52,455 by 2042
Trucks8%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$145,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Nasa RD 1 over Mud Lake built?

It was built in 1984, making it 41 years old in 2025. It was reconstructed in 1997.

What condition is Nasa RD 1 over Mud Lake 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 Mud Lake carry?

About 37,468 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Nasa RD 1 over Mud Lake?

The structure is 825 ft (251.5 m) long with a longest span of 32 ft (9.8 m) and a deck 87 ft wide.

Who owns Nasa RD 1 over Mud Lake?

It is owned by the State Highway Agency.