US Bridges

Mercury DR over Turkey Run Gully

FairPosted for load

Harris County, Texas · 0.95 MI S of IH 10 · Structure no. 121020AA4000001

Built
1958
67 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
53 ft
3 main spans
Daily traffic
5,175
2022 count
Owner
County
County Highway Agency

About this bridge

Mercury DR over Turkey Run Gully is a wood or timber stringer/multi-beam or girder carrying Mercury DR over Turkey Run Gully in Harris County, Texas. It was built in 1958, so it is 67 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. Its operating status is: posted for load restriction.

It carries about 5,175 vehicles a day, roughly 20% of them trucks, projected to reach 7,763 by 2042. The structure is 53 ft (16.2 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMercury DR
CrossesTurkey Run Gully
Location0.95 MI S of IH 10
RouteCounty Highway 0
CountyHarris County
StateTexas
Coordinates29.75988, -95.24717
Functional classUrban Minor 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length53 ft (16.2 m)
Longest span17 ft (5.2 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,175 (2022)
Projected traffic7,763 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$150,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mercury DR over Turkey Run Gully built?

It was built in 1958, making it 67 years old in 2025.

What condition is Mercury DR over Turkey Run Gully 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 Mercury DR over Turkey Run Gully carry?

About 5,175 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is Mercury DR over Turkey Run Gully?

The structure is 53 ft (16.2 m) long with a longest span of 17 ft (5.2 m) and a deck 33 ft wide.

Who owns Mercury DR over Turkey Run Gully?

It is owned by the County Highway Agency.