US Bridges

IH 20 EB over Tin Top RD

Fair

Parker County, Texas · 0.5 MI W of US 171 · Structure no. 021840031407056

Built
1969
56 years old
Condition
Fair
inspected September 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
165 ft
1 main span
Daily traffic
31,872
2023 count
Owner
State
State Highway Agency

About this bridge

IH 20 EB over Tin Top RD is a prestressed concrete stringer/multi-beam or girder carrying IH 20 EB over Tin Top RD in Parker County, Texas. It was built in 1969, so it is 56 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 31,872 vehicles a day, roughly 24% of them trucks, projected to reach 23,030 by 2033. The structure is 165 ft (50.3 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIH 20 EB
CrossesTin Top RD
Location0.5 MI W of US 171
RouteInterstate 20
CountyParker County
StateTexas
Coordinates32.72723, -97.79789
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length165 ft (50.3 m)
Longest span65 ft (19.8 m)
Deck width42 ft (12.8 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,872 (2023)
Projected traffic23,030 by 2033
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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 20 EB over Tin Top RD built?

It was built in 1969, making it 56 years old in 2025.

What condition is IH 20 EB over Tin Top RD 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 2022.

How much traffic does IH 20 EB over Tin Top RD carry?

About 31,872 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is IH 20 EB over Tin Top RD?

The structure is 165 ft (50.3 m) long with a longest span of 65 ft (19.8 m) and a deck 42 ft wide.

Who owns IH 20 EB over Tin Top RD?

It is owned by the State Highway Agency.