US Bridges

SH 36 over Keys Branch

Fair

Comanche County, Texas · 7.80 MI NW of FM 1477 · Structure no. 230470018202006

Built
1948
77 years old, rebuilt 1960
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
100 ft
4 main spans
Daily traffic
1,506
2020 count
Owner
State
State Highway Agency

About this bridge

SH 36 over Keys Branch is a concrete continuous slab carrying SH 36 over Keys Branch in Comanche County, Texas. It was built in 1948 and reconstructed in 1960, so it is 77 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 1,506 vehicles a day, roughly 16% of them trucks, projected to reach 2,960 by 2033. The structure is 100 ft (30.5 m) long and 46 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSH 36
CrossesKeys Branch
Location7.80 MI NW of FM 1477
RouteState Highway 36
CountyComanche County
StateTexas
Coordinates32.07587, -98.86429
Functional classRural 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
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length100 ft (30.5 m)
Longest span25 ft (7.6 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,506 (2020)
Projected traffic2,960 by 2033
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 36 over Keys Branch built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1960.

What condition is SH 36 over Keys Branch 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 August 2023.

How much traffic does SH 36 over Keys Branch carry?

About 1,506 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is SH 36 over Keys Branch?

The structure is 100 ft (30.5 m) long with a longest span of 25 ft (7.6 m) and a deck 46 ft wide.

Who owns SH 36 over Keys Branch?

It is owned by the State Highway Agency.