US Bridges

IH 10 EB over Mercury DR

Fair

Harris County, Texas · 0.8 MI E of IH 610 · Structure no. 121020050801148

Built
1961
64 years old, rebuilt 1985
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
190 ft
4 main spans
Daily traffic
91,435
2023 count
Owner
State
State Highway Agency

About this bridge

IH 10 EB over Mercury DR is a prestressed concrete stringer/multi-beam or girder carrying IH 10 EB over Mercury DR in Harris County, Texas. It was built in 1961 and reconstructed in 1985, so it is 64 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 5 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 91,435 vehicles a day, roughly 13% of them trucks, projected to reach 128,009 by 2042. The structure is 190 ft (57.9 m) long and 74 ft wide.

Location

Open in Google Maps
CarriesIH 10 EB
CrossesMercury DR
Location0.8 MI E of IH 610
RouteInterstate 10
CountyHarris County
StateTexas
Coordinates29.77361, -95.24737
Functional classUrban Principal Arterial - Interstate

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length190 ft (57.9 m)
Longest span47 ft (14.3 m)
Deck width74 ft (22.6 m)
Roadway width72 ft (21.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic91,435 (2023)
Projected traffic128,009 by 2042
Trucks13%
Lanes on structure5
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 10 EB over Mercury DR built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1985.

What condition is IH 10 EB 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 October 2024.

How much traffic does IH 10 EB over Mercury DR carry?

About 91,435 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is IH 10 EB over Mercury DR?

The structure is 190 ft (57.9 m) long with a longest span of 47 ft (14.3 m) and a deck 74 ft wide.

Who owns IH 10 EB over Mercury DR?

It is owned by the State Highway Agency.