US Bridges

US 90 over Mercury DR

Fair

Harris County, Texas · 1.0 MI NE of IH 10 · Structure no. 121020002802057

Built
2010
15 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
390 ft
3 main spans
Daily traffic
28,348
2023 count
Owner
State
State Highway Agency

About this bridge

US 90 over Mercury DR is a steel continuous stringer/multi-beam or girder carrying US 90 over Mercury DR in Harris County, Texas. It was built in 2010, so it is 15 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 28,348 vehicles a day, roughly 13% of them trucks, projected to reach 39,687 by 2042. The structure is 390 ft (118.9 m) long and 122 ft wide.

Location

Open in Google Maps
CarriesUS 90
CrossesMercury DR
Location1.0 MI NE of IH 10
RouteU.S. Route 90
CountyHarris County
StateTexas
Coordinates29.78514, -95.24608
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length390 ft (118.9 m)
Longest span148 ft (45.1 m)
Deck width122 ft (37.3 m)
Roadway width118 ft (36 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,348 (2023)
Projected traffic39,687 by 2042
Trucks13%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 90 over Mercury DR built?

It was built in 2010, making it 15 years old in 2025.

What condition is US 90 over Mercury DR 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 September 2024.

How much traffic does US 90 over Mercury DR carry?

About 28,348 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is US 90 over Mercury DR?

The structure is 390 ft (118.9 m) long with a longest span of 148 ft (45.1 m) and a deck 122 ft wide.

Who owns US 90 over Mercury DR?

It is owned by the State Highway Agency.