US Bridges

Saturn Lane over Drainage Ditch

Fair

Harris County, Texas · 0.31 MI NW of Nasa Road 1 · Structure no. 121020B57451303

Built
1970
55 years old
Condition
Fair
inspected December 2024
Type
Culvert
Steel
Length
40 ft
4 main spans
Daily traffic
9,281
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Saturn Lane over Drainage Ditch is a steel culvert carrying Saturn Lane over Drainage Ditch in Harris County, Texas. It was built in 1970, so it is 55 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 9,281 vehicles a day, roughly 3% of them trucks, projected to reach 12,993 by 2042. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSaturn Lane
CrossesDrainage Ditch
Location0.31 MI NW of Nasa Road 1
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.55403, -95.09876
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,281 (2022)
Projected traffic12,993 by 2042
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Saturn Lane over Drainage Ditch built?

It was built in 1970, making it 55 years old in 2025.

What condition is Saturn Lane over Drainage Ditch 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 December 2024.

How much traffic does Saturn Lane over Drainage Ditch carry?

About 9,281 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Saturn Lane over Drainage Ditch?

The structure is 40 ft (12.2 m) long with a longest span of 7 ft (2.1 m).

Who owns Saturn Lane over Drainage Ditch?

It is owned by the City or Municipal Highway Agency.