US Bridges

IH 20 EB over Union Hill RD / CR 279

Fair

Callahan County, Texas · 10.40 MI E of Taylor C/L · Structure no. 080300000607291

Built
1964
61 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete Continuous
Length
114 ft
3 main spans
Daily traffic
13,720
2019 count
Owner
State
State Highway Agency

About this bridge

IH 20 EB over Union Hill RD / CR 279 is a concrete continuous slab carrying IH 20 EB over Union Hill RD / CR 279 in Callahan County, Texas. It was built in 1964, so it is 61 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 13,720 vehicles a day, roughly 29% of them trucks, projected to reach 14,350 by 2033. The structure is 114 ft (34.7 m) long and 40 ft wide.

Location

Open in Google Maps
CarriesIH 20 EB
CrossesUnion Hill RD / CR 279
Location10.40 MI E of Taylor C/L
RouteInterstate 20
CountyCallahan County
StateTexas
Coordinates32.40754, -99.45474
Functional classRural 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.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating34.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length114 ft (34.7 m)
Longest span45 ft (13.7 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,720 (2019)
Projected traffic14,350 by 2033
Trucks29%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
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 20 EB over Union Hill RD / CR 279 built?

It was built in 1964, making it 61 years old in 2025.

What condition is IH 20 EB over Union Hill RD / CR 279 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 February 2023.

How much traffic does IH 20 EB over Union Hill RD / CR 279 carry?

About 13,720 vehicles per day (2019 count), of which roughly 29% are trucks.

How long is IH 20 EB over Union Hill RD / CR 279?

The structure is 114 ft (34.7 m) long with a longest span of 45 ft (13.7 m) and a deck 40 ft wide.

Who owns IH 20 EB over Union Hill RD / CR 279?

It is owned by the State Highway Agency.